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Finding the Fourth Proportional to 67,049.72, 100,574.57 and 17,129.93

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Solution

The fourth proportional to 67,049.72, 100,574.57 and 17,129.93 is: 25,694.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,049.72 : 100,574.57 = 17,129.93 : x
  2. Step 2: Convert to fraction form
    67,049.72/100,574.57 = 17,129.93/x
  3. Step 3: Cross multiply
    67,049.72x = 100,574.57 × 17,129.93
  4. Step 4: Simplify right side
    67,049.72x = 1,722,834,755.36
  5. Step 5: Solve for x
    x = 1,722,834,755.36/67,049.72
  6. Step 6: Final answer
    x = 25,694.89

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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.