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Finding the Fourth Proportional to 71,866.80, 99,148.92 and 43,562.16

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Solution

The fourth proportional to 71,866.80, 99,148.92 and 43,562.16 is: 60,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,866.80 : 99,148.92 = 43,562.16 : x
  2. Step 2: Convert to fraction form
    71,866.80/99,148.92 = 43,562.16/x
  3. Step 3: Cross multiply
    71,866.80x = 99,148.92 × 43,562.16
  4. Step 4: Simplify right side
    71,866.80x = 4,319,141,116.87
  5. Step 5: Solve for x
    x = 4,319,141,116.87/71,866.80
  6. Step 6: Final answer
    x = 60,099.25

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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.