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Finding the Fourth Proportional to 84,390.90, 126,475.62 and 62,099.90

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Solution

The fourth proportional to 84,390.90, 126,475.62 and 62,099.90 is: 93,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,390.90 : 126,475.62 = 62,099.90 : x
  2. Step 2: Convert to fraction form
    84,390.90/126,475.62 = 62,099.90/x
  3. Step 3: Cross multiply
    84,390.90x = 126,475.62 × 62,099.90
  4. Step 4: Simplify right side
    84,390.90x = 7,854,123,354.44
  5. Step 5: Solve for x
    x = 7,854,123,354.44/84,390.90
  6. Step 6: Final answer
    x = 93,068.37

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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.