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Geometric Series

  1. Apr 23, 2006 #1
    Hey guys i was having trouble on this question so i was wondering if someone could help me :)

    In a geometric series, (x-2),(x+5), and (4x-8) are consecutive terms. Determine all possible values of x.

  2. jcsd
  3. Apr 23, 2006 #2
    What do you know about geometric series? Any given term is just the previous term multiplied by a constant (usually called r). It doesn't matter which two terms you look at - the constant is always the same. So, the ratio of your 2nd term to your 1st term should be the same as the ratio of your 3rd term to your 2nd term. Set up the proportion and solve.
  4. Apr 23, 2006 #3
    hmm yea that seems much easier now

    i got -1/3 and 9 :smile:

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