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Finding the Fourth Proportional to 80,552.92, 120,851.16 and 57,326.80

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Solution

The fourth proportional to 80,552.92, 120,851.16 and 57,326.80 is: 86,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,552.92 : 120,851.16 = 57,326.80 : x
  2. Step 2: Convert to fraction form
    80,552.92/120,851.16 = 57,326.80/x
  3. Step 3: Cross multiply
    80,552.92x = 120,851.16 × 57,326.80
  4. Step 4: Simplify right side
    80,552.92x = 6,928,010,279.09
  5. Step 5: Solve for x
    x = 6,928,010,279.09/80,552.92
  6. Step 6: Final answer
    x = 86,005.70

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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.