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Finding the Fourth Proportional to 317,375.68, 476,061.46 and 80,716.32

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Solution

The fourth proportional to 317,375.68, 476,061.46 and 80,716.32 is: 121,073.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,375.68 : 476,061.46 = 80,716.32 : x
  2. Step 2: Convert to fraction form
    317,375.68/476,061.46 = 80,716.32/x
  3. Step 3: Cross multiply
    317,375.68x = 476,061.46 × 80,716.32
  4. Step 4: Simplify right side
    317,375.68x = 38,425,929,145.03
  5. Step 5: Solve for x
    x = 38,425,929,145.03/317,375.68
  6. Step 6: Final answer
    x = 121,073.96

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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.