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Finding the Fourth Proportional to 71,990.80, 108,006.96 and 22,078.27

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Solution

The fourth proportional to 71,990.80, 108,006.96 and 22,078.27 is: 33,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,990.80 : 108,006.96 = 22,078.27 : x
  2. Step 2: Convert to fraction form
    71,990.80/108,006.96 = 22,078.27/x
  3. Step 3: Cross multiply
    71,990.80x = 108,006.96 × 22,078.27
  4. Step 4: Simplify right side
    71,990.80x = 2,384,606,824.76
  5. Step 5: Solve for x
    x = 2,384,606,824.76/71,990.80
  6. Step 6: Final answer
    x = 33,123.77

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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.