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Finding the Fourth Proportional to 71,814.60, 107,655.48 and 36,676.80

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Solution

The fourth proportional to 71,814.60, 107,655.48 and 36,676.80 is: 54,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,814.60 : 107,655.48 = 36,676.80 : x
  2. Step 2: Convert to fraction form
    71,814.60/107,655.48 = 36,676.80/x
  3. Step 3: Cross multiply
    71,814.60x = 107,655.48 × 36,676.80
  4. Step 4: Simplify right side
    71,814.60x = 3,948,458,508.86
  5. Step 5: Solve for x
    x = 3,948,458,508.86/71,814.60
  6. Step 6: Final answer
    x = 54,981.28

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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.