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Finding the Fourth Proportional to 363,542.62, 545,563.10 and 126,885.30

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Solution

The fourth proportional to 363,542.62, 545,563.10 and 126,885.30 is: 190,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,542.62 : 545,563.10 = 126,885.30 : x
  2. Step 2: Convert to fraction form
    363,542.62/545,563.10 = 126,885.30/x
  3. Step 3: Cross multiply
    363,542.62x = 545,563.10 × 126,885.30
  4. Step 4: Simplify right side
    363,542.62x = 69,223,937,612.43
  5. Step 5: Solve for x
    x = 69,223,937,612.43/363,542.62
  6. Step 6: Final answer
    x = 190,414.92

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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.