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Finding the Fourth Proportional to 473,149,552.40, 708,662,645.40 and 388,214,896.40

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Solution

The fourth proportional to 473,149,552.40, 708,662,645.40 and 388,214,896.40 is: 581,451,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,149,552.40 : 708,662,645.40 = 388,214,896.40 : x
  2. Step 2: Convert to fraction form
    473,149,552.40/708,662,645.40 = 388,214,896.40/x
  3. Step 3: Cross multiply
    473,149,552.40x = 708,662,645.40 × 388,214,896.40
  4. Step 4: Simplify right side
    473,149,552.40x = 275,113,395,466,510,912
  5. Step 5: Solve for x
    x = 275,113,395,466,510,912/473,149,552.40
  6. Step 6: Final answer
    x = 581,451,243.21

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