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Finding the Fourth Proportional to 642,978,930.42, 964,494,549.27 and 306,283,385.93

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Solution

The fourth proportional to 642,978,930.42, 964,494,549.27 and 306,283,385.93 is: 459,437,537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,978,930.42 : 964,494,549.27 = 306,283,385.93 : x
  2. Step 2: Convert to fraction form
    642,978,930.42/964,494,549.27 = 306,283,385.93/x
  3. Step 3: Cross multiply
    642,978,930.42x = 964,494,549.27 × 306,283,385.93
  4. Step 4: Simplify right side
    642,978,930.42x = 295,408,656,256,622,336
  5. Step 5: Solve for x
    x = 295,408,656,256,622,336/642,978,930.42
  6. Step 6: Final answer
    x = 459,437,537.19

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