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Finding the Fourth Proportional to 81,104.75, 111,924.78 and 45,296.11

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Solution

The fourth proportional to 81,104.75, 111,924.78 and 45,296.11 is: 62,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.75 : 111,924.78 = 45,296.11 : x
  2. Step 2: Convert to fraction form
    81,104.75/111,924.78 = 45,296.11/x
  3. Step 3: Cross multiply
    81,104.75x = 111,924.78 × 45,296.11
  4. Step 4: Simplify right side
    81,104.75x = 5,069,757,146.61
  5. Step 5: Solve for x
    x = 5,069,757,146.61/81,104.75
  6. Step 6: Final answer
    x = 62,508.76

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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.