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Finding the Fourth Proportional to 87,590.76, 120,875.22 and 47,304.52

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Solution

The fourth proportional to 87,590.76, 120,875.22 and 47,304.52 is: 65,280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,590.76 : 120,875.22 = 47,304.52 : x
  2. Step 2: Convert to fraction form
    87,590.76/120,875.22 = 47,304.52/x
  3. Step 3: Cross multiply
    87,590.76x = 120,875.22 × 47,304.52
  4. Step 4: Simplify right side
    87,590.76x = 5,717,944,261.99
  5. Step 5: Solve for x
    x = 5,717,944,261.99/87,590.76
  6. Step 6: Final answer
    x = 65,280.22

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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.