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Finding the Fourth Proportional to 87,355.52, 120,550.56 and 47,611.52

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Solution

The fourth proportional to 87,355.52, 120,550.56 and 47,611.52 is: 65,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,355.52 : 120,550.56 = 47,611.52 : x
  2. Step 2: Convert to fraction form
    87,355.52/120,550.56 = 47,611.52/x
  3. Step 3: Cross multiply
    87,355.52x = 120,550.56 × 47,611.52
  4. Step 4: Simplify right side
    87,355.52x = 5,739,595,398.45
  5. Step 5: Solve for x
    x = 5,739,595,398.45/87,355.52
  6. Step 6: Final answer
    x = 65,703.87

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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.