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Finding the Fourth Proportional to 71,940.96, 107,869.68 and 22,006.80

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Solution

The fourth proportional to 71,940.96, 107,869.68 and 22,006.80 is: 32,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,940.96 : 107,869.68 = 22,006.80 : x
  2. Step 2: Convert to fraction form
    71,940.96/107,869.68 = 22,006.80/x
  3. Step 3: Cross multiply
    71,940.96x = 107,869.68 × 22,006.80
  4. Step 4: Simplify right side
    71,940.96x = 2,373,866,473.82
  5. Step 5: Solve for x
    x = 2,373,866,473.82/71,940.96
  6. Step 6: Final answer
    x = 32,997.43

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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.