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Finding the Fourth Proportional to 87,298.35, 120,471.84 and 49,572.60

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Solution

The fourth proportional to 87,298.35, 120,471.84 and 49,572.60 is: 68,410.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,298.35 : 120,471.84 = 49,572.60 : x
  2. Step 2: Convert to fraction form
    87,298.35/120,471.84 = 49,572.60/x
  3. Step 3: Cross multiply
    87,298.35x = 120,471.84 × 49,572.60
  4. Step 4: Simplify right side
    87,298.35x = 5,972,102,335.58
  5. Step 5: Solve for x
    x = 5,972,102,335.58/87,298.35
  6. Step 6: Final answer
    x = 68,410.25

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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.