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Finding the Fourth Proportional to 123,058.66, 169,821.02 and 66,470.03

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Solution

The fourth proportional to 123,058.66, 169,821.02 and 66,470.03 is: 91,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,058.66 : 169,821.02 = 66,470.03 : x
  2. Step 2: Convert to fraction form
    123,058.66/169,821.02 = 66,470.03/x
  3. Step 3: Cross multiply
    123,058.66x = 169,821.02 × 66,470.03
  4. Step 4: Simplify right side
    123,058.66x = 11,288,007,961.68
  5. Step 5: Solve for x
    x = 11,288,007,961.68/123,058.66
  6. Step 6: Final answer
    x = 91,728.68

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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.