Answer :

Answer:

The fourth term is:

[tex]a_4=a_1r^3[/tex]

Explanation:

Given that the first term is a1 and the common ratio is r = 3

The nth term of a geometric sequence is:

[tex]T_n=a_1r^{n-1}[/tex]

Using n = 3, we have

[tex]T_4=a_1r^3[/tex]

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