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Finding the Fourth Proportional to 79,229.76, 118,775.52 and 39,731.52

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Solution

The fourth proportional to 79,229.76, 118,775.52 and 39,731.52 is: 59,562.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,229.76 : 118,775.52 = 39,731.52 : x
  2. Step 2: Convert to fraction form
    79,229.76/118,775.52 = 39,731.52/x
  3. Step 3: Cross multiply
    79,229.76x = 118,775.52 × 39,731.52
  4. Step 4: Simplify right side
    79,229.76x = 4,719,131,948.39
  5. Step 5: Solve for x
    x = 4,719,131,948.39/79,229.76
  6. Step 6: Final answer
    x = 59,562.62

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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.