In the following number series only one number is wrong. Find out the wrong number.
The pattern is :
144 $$\times 1.5$$ = 216 $$\neq 215$$
216 $$\times 2.5$$ = 540
540 $$\times 3.5$$ = 1890
1890 $$\times 4.5$$ = 8505
8505 $$\times 5.5$$ = 46777.5
46777.5 $$\times 6.5$$ = 304053.75
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