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Finding the Fourth Proportional to 123,059.57, 169,822.21 and 66,470.94

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Solution

The fourth proportional to 123,059.57, 169,822.21 and 66,470.94 is: 91,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,059.57 : 169,822.21 = 66,470.94 : x
  2. Step 2: Convert to fraction form
    123,059.57/169,822.21 = 66,470.94/x
  3. Step 3: Cross multiply
    123,059.57x = 169,822.21 × 66,470.94
  4. Step 4: Simplify right side
    123,059.57x = 11,288,241,931.58
  5. Step 5: Solve for x
    x = 11,288,241,931.58/123,059.57
  6. Step 6: Final answer
    x = 91,729.90

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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.