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Finding the Fourth Proportional to 73,099.76, 100,877.82 and 39,565.76

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Solution

The fourth proportional to 73,099.76, 100,877.82 and 39,565.76 is: 54,600.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,099.76 : 100,877.82 = 39,565.76 : x
  2. Step 2: Convert to fraction form
    73,099.76/100,877.82 = 39,565.76/x
  3. Step 3: Cross multiply
    73,099.76x = 100,877.82 × 39,565.76
  4. Step 4: Simplify right side
    73,099.76x = 3,991,307,615.44
  5. Step 5: Solve for x
    x = 3,991,307,615.44/73,099.76
  6. Step 6: Final answer
    x = 54,600.83

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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.