Calculate the portfolio standard deviation for the portfolio containing two currency exchange pairs: JPYUSD and CHFUSD. JPYUSD is represented for $73\%$ in the portfolio arid has a standard deviation of $2\mathrm{.}35\%$ while CHFUSD is represented for $27\%$ in the portfolio and has a standard deviation of $4\mathrm{.}89\%.$ Their correlation coefficient is $=12\mathrm{.}13\%.$

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