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Finding the Fourth Proportional to 123,061.26, 169,824.60 and 66,472.62

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Solution

The fourth proportional to 123,061.26, 169,824.60 and 66,472.62 is: 91,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,061.26 : 169,824.60 = 66,472.62 : x
  2. Step 2: Convert to fraction form
    123,061.26/169,824.60 = 66,472.62/x
  3. Step 3: Cross multiply
    123,061.26x = 169,824.60 × 66,472.62
  4. Step 4: Simplify right side
    123,061.26x = 11,288,686,102.45
  5. Step 5: Solve for x
    x = 11,288,686,102.45/123,061.26
  6. Step 6: Final answer
    x = 91,732.25

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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.