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en.wikipedia.org/wiki/Geometric_progression

In mathematics, a geometric progression, also known as a geometric sequence, is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio. For example, the sequence 2, 6, 18, 54, ... is a geometric progression with common ratio 3.

www.mathwords.com/c/common_ratio.htm

For a geometric sequence or geometric series, the common ratio is the ratio of a term to the previous term. This ratio is usually indicated by the variable r.

www.varsitytutors.com/hotmath/hotmath_help/topics/common-ratio

The constant factor between consecutive terms of a geometric sequence is called the common ratio.

study.com/academy/lesson/common-ratio-definition-lesson-quiz.html

The common ratio is the ratio between two numbers in a geometric sequence. Keep reading for a detailed definition, the formula for determining the...

courses.lumenlearning.com/precalcone/chapter/finding-common-ratios

Each term of a geometric sequence increases or decreases by a constant factor called the common ratio. The sequence below is an example of a geometric ...

www.mathematicsdictionary.com/english/vmd/full/c/commonratio.htm

common ratio. The ratio of successive terms in a geometric sequence. Related Terms: geometric sequence, ratio, term. English | Español.

mathspace.co/learn/world-of-maths/sequences-and-series/finding-the-common-ratio-18733/finding-the-common-ratio-1130

Sometimes we are asked to find the common ratio of a certain geometric progression, and then use this to find a group of terms or simply a specific term.

www.purplemath.com/modules/series3.htm

To find the common ratio, I have to divide a successive pair of terms. It doesn't matter which pair I pick, as long as they're right next to each other. To be thorough ...

www.mathcaptain.com/algebra/common-ratio.html

We deal with varies terms like common ratio, common distance, first term, n-th term etc. In geometric series or sequence, the common ratio is the ratio of a term to ...