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Finding the Fourth Proportional to 71,780.55, 107,591.54 and 29,637.41

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Solution

The fourth proportional to 71,780.55, 107,591.54 and 29,637.41 is: 44,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,780.55 : 107,591.54 = 29,637.41 : x
  2. Step 2: Convert to fraction form
    71,780.55/107,591.54 = 29,637.41/x
  3. Step 3: Cross multiply
    71,780.55x = 107,591.54 × 29,637.41
  4. Step 4: Simplify right side
    71,780.55x = 3,188,733,897.37
  5. Step 5: Solve for x
    x = 3,188,733,897.37/71,780.55
  6. Step 6: Final answer
    x = 44,423.37

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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.