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Finding the Fourth Proportional to 488,448,652.80, 732,672,979.20 and 485,047,430.40

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Solution

The fourth proportional to 488,448,652.80, 732,672,979.20 and 485,047,430.40 is: 727,571,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,448,652.80 : 732,672,979.20 = 485,047,430.40 : x
  2. Step 2: Convert to fraction form
    488,448,652.80/732,672,979.20 = 485,047,430.40/x
  3. Step 3: Cross multiply
    488,448,652.80x = 732,672,979.20 × 485,047,430.40
  4. Step 4: Simplify right side
    488,448,652.80x = 355,381,145,884,472,640
  5. Step 5: Solve for x
    x = 355,381,145,884,472,640/488,448,652.80
  6. Step 6: Final answer
    x = 727,571,145.60

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