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The \(23^{rd}\) term in a certain geometric sequence is 16 and the \(28^{th}\) term in the sequence is 24. What is the \(43^{rd}\) term?

 

I got the answer. It's 81.

 Jul 3, 2018
edited by Guest  Jul 3, 2018
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The common ratio is 1.5 for every 5th term. Since there are:

43 - 28 =15 terms. Therefore:

1.5^3 x 43 =81 - 43rd term.

 Jul 3, 2018

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