O valor da razão ( q ) da PG.

[tex]\large \text {$\Rightarrow ~q = 7$}[/tex]

                              [tex]\Large\text{$ Progress\tilde{a}o ~Geom\acute{e}trica $}[/tex]

[tex]\large \text {$an = a1 ~. ~q^{n - 1} $}\\\\\large \text {$ 117.649= 7 ~. ~q^{6 - 1} $}\\\\\large \text {$ 117649= 7 ~. ~q^{5} $}\\\\\\\large \text {$ \dfrac{117649}{7}= q^{5} $}\\\\\\\large \text {$ 16807=q^{5} $}\\\\\\\large \text {$ q = \sqrt[5]{16807} $}\\\\\\\large \text {$ q = \sqrt[5]{7^5} $}\\\\\\\large \text {$ q = 7 $}\\\\\\[/tex]

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