General Maths Puzzle Numerical Ability Sequence and Series

What is the next number of the following sequence
1452,810,392....?

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General Other Question

What is the next number of the following sequence
125, 102, 550,...
In a long jump qualifying competition, the average jump length of successful competitors was 6.5 meters. The average jump length of unsuccessful competitors was 4.5 meter, and average jump length of all competitors was 4.9 meters. Find the percentage (in %) of successful competitors