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Finding the Fourth Proportional to 123,048.52, 169,806.96 and 66,459.92

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Solution

The fourth proportional to 123,048.52, 169,806.96 and 66,459.92 is: 91,714.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,048.52 : 169,806.96 = 66,459.92 : x
  2. Step 2: Convert to fraction form
    123,048.52/169,806.96 = 66,459.92/x
  3. Step 3: Cross multiply
    123,048.52x = 169,806.96 × 66,459.92
  4. Step 4: Simplify right side
    123,048.52x = 11,285,356,977.04
  5. Step 5: Solve for x
    x = 11,285,356,977.04/123,048.52
  6. Step 6: Final answer
    x = 91,714.69

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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.