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Finding the Fourth Proportional to 71,213.80, 106,679.90 and 62,458.60

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Solution

The fourth proportional to 71,213.80, 106,679.90 and 62,458.60 is: 93,564.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,213.80 : 106,679.90 = 62,458.60 : x
  2. Step 2: Convert to fraction form
    71,213.80/106,679.90 = 62,458.60/x
  3. Step 3: Cross multiply
    71,213.80x = 106,679.90 × 62,458.60
  4. Step 4: Simplify right side
    71,213.80x = 6,663,077,202.14
  5. Step 5: Solve for x
    x = 6,663,077,202.14/71,213.80
  6. Step 6: Final answer
    x = 93,564.41

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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.