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Finding the Fourth Proportional to 87,307.92, 120,470.76 and 49,062.96

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Solution

The fourth proportional to 87,307.92, 120,470.76 and 49,062.96 is: 67,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,307.92 : 120,470.76 = 49,062.96 : x
  2. Step 2: Convert to fraction form
    87,307.92/120,470.76 = 49,062.96/x
  3. Step 3: Cross multiply
    87,307.92x = 120,470.76 × 49,062.96
  4. Step 4: Simplify right side
    87,307.92x = 5,910,652,079.05
  5. Step 5: Solve for x
    x = 5,910,652,079.05/87,307.92
  6. Step 6: Final answer
    x = 67,698.92

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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.