Question 986584
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4500 = 15000*0.3;


1350 = 4500*0.3;


405 = 1350*0.3;


121.5 = 405*0.3.


The given  5  numbers are the first  5  terms of a geometric progression with the first term  15000  and the common ratio  0.3.


Therefore,  you may expect that the next term is  121.5*0.3 = 36.45.