Answer: The number is 90,000.26
Step-by-step explanation:
 Extracting key information from the question:-
*** The value of the "9" in Lea's riddle is 10 times the one in 329,513
*** The value of the "2" in the riddle is 1/10 the value of the 2 in 7,562.
*** The value of the 6 in the riddle is one-tenth the value of the 6 in 4.68
*** We are required to solve this possible and reveal the number.
 Now, in the number 329,513 the place value of 9 is 9,000. According to the information provided, the value of the 9 in the riddle is ten times the value of the 9 in 329,513.
 So, multiplying 9000 by 10 gives:-
 9,000 × 10 
 = 90,000
 
 Again, the value of the 2 in the riddle is one-tenth (1/10) the value of the 2 in 7,562. The value of 2 in 7,562 is 2 units, therefore one-tenth of this 2 units will give:-
 1/10 × 2
 = 0.2
 Similarly, the value of 6 in the puzzle is one-tenth (1/10) the value of the 6 in 4.68; The 6 here is 6 hundredth = 0.6
 Therefore, the value of 6 in the puzzle is:
 1/10 × 0.6
 = 0.06
 In order to discover the number in Lea's riddle, we will then add up the calculated values:-
 = 90,000 + 0.2 + 0.006
 = 90,000.26
 This number is the answer to Lea's riddle.