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Finding the Fourth Proportional to 575,201,103.60, 862,801,655.40 and 399,187,844.40

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Solution

The fourth proportional to 575,201,103.60, 862,801,655.40 and 399,187,844.40 is: 598,781,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,201,103.60 : 862,801,655.40 = 399,187,844.40 : x
  2. Step 2: Convert to fraction form
    575,201,103.60/862,801,655.40 = 399,187,844.40/x
  3. Step 3: Cross multiply
    575,201,103.60x = 862,801,655.40 × 399,187,844.40
  4. Step 4: Simplify right side
    575,201,103.60x = 344,419,932,963,877,568
  5. Step 5: Solve for x
    x = 344,419,932,963,877,568/575,201,103.60
  6. Step 6: Final answer
    x = 598,781,766.60

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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.