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Finding the Fourth Proportional to 123,163.88, 169,966.22 and 66,575.25

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Solution

The fourth proportional to 123,163.88, 169,966.22 and 66,575.25 is: 91,873.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,163.88 : 169,966.22 = 66,575.25 : x
  2. Step 2: Convert to fraction form
    123,163.88/169,966.22 = 66,575.25/x
  3. Step 3: Cross multiply
    123,163.88x = 169,966.22 × 66,575.25
  4. Step 4: Simplify right side
    123,163.88x = 11,315,543,255.18
  5. Step 5: Solve for x
    x = 11,315,543,255.18/123,163.88
  6. Step 6: Final answer
    x = 91,873.88

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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.