The *n*th term of an infinite series is given by:-
\[t_n = nx^{n-1},\]
Where \(t_n\) represents the *n*th term

And it is given that:-
\[\sum_{n=1}^{\infty} nx^{n-1} = 4, \]
Where x is a real number lying between 0 and 1.

Calculate the value of x.

Note:-Since numbers being added are infinite so sum of above sequance is not actualy 4, if **t n**

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