If the sum of the infinite geometric series \(\frac{a}{b}+\frac{a}{b^{2}}+\frac{a}{b^{3}}+\ldots\) is 4, then what is the sum of \(\frac{a}{(a+b)}+\frac{a}{(a+b)^{2}} +\frac{a}{(a+b)^{3}}+\ldots ?\)

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