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Finding the Fourth Proportional to 71,707.87, 107,574.11 and 21,793.01

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Solution

The fourth proportional to 71,707.87, 107,574.11 and 21,793.01 is: 32,693.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,707.87 : 107,574.11 = 21,793.01 : x
  2. Step 2: Convert to fraction form
    71,707.87/107,574.11 = 21,793.01/x
  3. Step 3: Cross multiply
    71,707.87x = 107,574.11 × 21,793.01
  4. Step 4: Simplify right side
    71,707.87x = 2,344,363,654.97
  5. Step 5: Solve for x
    x = 2,344,363,654.97/71,707.87
  6. Step 6: Final answer
    x = 32,693.25

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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.