Demand for a certain product has been stable since the beginning of $2020.$ We are now at the end of week $38$ and you want to forecast demand in week $39.$ The weekly demand in the past weeks is as follows: $46\mathrm{.}0$ in week $38,51\mathrm{.}4$ in week $37,47\mathrm{.}2$ in week $36,50\mathrm{.}7$ in week $35.$

Forecast the demand in week $38$ using $3-$period moving average. Please use one decimal.