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Finding the Fourth Proportional to 392,372,155.20, 588,558,232.80 and 392,372,155.20

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Solution

The fourth proportional to 392,372,155.20, 588,558,232.80 and 392,372,155.20 is: 588,558,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,372,155.20 : 588,558,232.80 = 392,372,155.20 : x
  2. Step 2: Convert to fraction form
    392,372,155.20/588,558,232.80 = 392,372,155.20/x
  3. Step 3: Cross multiply
    392,372,155.20x = 588,558,232.80 × 392,372,155.20
  4. Step 4: Simplify right side
    392,372,155.20x = 230,933,862,264,439,296
  5. Step 5: Solve for x
    x = 230,933,862,264,439,296/392,372,155.20
  6. Step 6: Final answer
    x = 588,558,232.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.