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Finding the Fourth Proportional to 87,508.74, 120,752.80 and 49,267.58

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Solution

The fourth proportional to 87,508.74, 120,752.80 and 49,267.58 is: 67,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,508.74 : 120,752.80 = 49,267.58 : x
  2. Step 2: Convert to fraction form
    87,508.74/120,752.80 = 49,267.58/x
  3. Step 3: Cross multiply
    87,508.74x = 120,752.80 × 49,267.58
  4. Step 4: Simplify right side
    87,508.74x = 5,949,198,234.22
  5. Step 5: Solve for x
    x = 5,949,198,234.22/87,508.74
  6. Step 6: Final answer
    x = 67,984.05

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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.