When sketched a ballon figure, the ends of the large diagonal are at the points \( \mathrm{P}(2,-2) \) and \( R(-14,-14) \) and the diagonals intersect at the point \( M \). The small diagonal QS divides RP in the ratio \( 3: 1 \) and \( M P=M Q= \) MS. prove that the coordinates of point \( M \) are \( (-2,-5) \)
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