Question 1204480
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Any geometric progression has this characteristics property



   for any three consecutive terms &nbsp;{{{a[k-l]}}}, &nbsp;{{{a[k]}}} and &nbsp;{{{a[k+l]}}} 

   the square of a middle term is equal to the product of its neighbors



For the proof, see the lesson

    <A HREF=http://www.algebra.com/algebra/homework/Sequences-and-series/One-characteristic-property-of-geometric-progressions.lesson>One characteristic property of geometric progressions</A>

in this site.


From this property, for your progression  M*N = {{{1^2}}} = 1.    <U>ANSWER</U>



Notice that it is true independently of the given fact 
that 4/3 is the first term of this progression.


In other words, this fact is excessive and unnecessary information for the problem.
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Solved and explained.