The first `cardinalThrough20(N)` terms of a geometric sequence are given:

`GIVEN_TEX.join(",")`, \ldots

What is the `ordinalThrough20(N + 1)` term in the sequence?

In any geometric sequence, each term is equal to the previous term times the common ratio.

Thus, the second term is equal to the first term times the common ratio. In this sequence, the second term,

, is `GIVEN_TEX[1]`

times the first term, `R_TEX`

.`GIVEN_TEX[0]`

Therefore, the common ratio is

.`R_TEX`

The `ordinalThrough20(N + 1)` term in the sequence is equal to the `ordinalThrough20(N)` term times the common ratio, or

.`GIVEN_TEX[N - 1]` \cdot `R_TEX` = `fractionReduce(A * pow(RN, N + OFFSET), pow(RD, N + OFFSET))`