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Finding the Fourth Proportional to 58,553.80, 87,781.48 and 47,432.91

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Solution

The fourth proportional to 58,553.80, 87,781.48 and 47,432.91 is: 71,109.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,553.80 : 87,781.48 = 47,432.91 : x
  2. Step 2: Convert to fraction form
    58,553.80/87,781.48 = 47,432.91/x
  3. Step 3: Cross multiply
    58,553.80x = 87,781.48 × 47,432.91
  4. Step 4: Simplify right side
    58,553.80x = 4,163,731,040.51
  5. Step 5: Solve for x
    x = 4,163,731,040.51/58,553.80
  6. Step 6: Final answer
    x = 71,109.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.