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Finding the Fourth Proportional to 123,046.52, 169,804.20 and 66,457.92

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Solution

The fourth proportional to 123,046.52, 169,804.20 and 66,457.92 is: 91,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,046.52 : 169,804.20 = 66,457.92 : x
  2. Step 2: Convert to fraction form
    123,046.52/169,804.20 = 66,457.92/x
  3. Step 3: Cross multiply
    123,046.52x = 169,804.20 × 66,457.92
  4. Step 4: Simplify right side
    123,046.52x = 11,284,833,939.26
  5. Step 5: Solve for x
    x = 11,284,833,939.26/123,046.52
  6. Step 6: Final answer
    x = 91,711.93

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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.