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Finding the Fourth Proportional to 63,149.27, 87,025.41 and 45,213.12

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Solution

The fourth proportional to 63,149.27, 87,025.41 and 45,213.12 is: 62,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,149.27 : 87,025.41 = 45,213.12 : x
  2. Step 2: Convert to fraction form
    63,149.27/87,025.41 = 45,213.12/x
  3. Step 3: Cross multiply
    63,149.27x = 87,025.41 × 45,213.12
  4. Step 4: Simplify right side
    63,149.27x = 3,934,690,305.38
  5. Step 5: Solve for x
    x = 3,934,690,305.38/63,149.27
  6. Step 6: Final answer
    x = 62,307.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.