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Finding the Fourth Proportional to 83,326.10, 124,843.34 and 69,375.76

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Solution

The fourth proportional to 83,326.10, 124,843.34 and 69,375.76 is: 103,942.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,326.10 : 124,843.34 = 69,375.76 : x
  2. Step 2: Convert to fraction form
    83,326.10/124,843.34 = 69,375.76/x
  3. Step 3: Cross multiply
    83,326.10x = 124,843.34 × 69,375.76
  4. Step 4: Simplify right side
    83,326.10x = 8,661,101,593.44
  5. Step 5: Solve for x
    x = 8,661,101,593.44/83,326.10
  6. Step 6: Final answer
    x = 103,942.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.