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Finding the Fourth Proportional to 317,392.14, 476,085.98 and 80,732.72

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Solution

The fourth proportional to 317,392.14, 476,085.98 and 80,732.72 is: 121,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,392.14 : 476,085.98 = 80,732.72 : x
  2. Step 2: Convert to fraction form
    317,392.14/476,085.98 = 80,732.72/x
  3. Step 3: Cross multiply
    317,392.14x = 476,085.98 × 80,732.72
  4. Step 4: Simplify right side
    317,392.14x = 38,435,716,119.27
  5. Step 5: Solve for x
    x = 38,435,716,119.27/317,392.14
  6. Step 6: Final answer
    x = 121,098.51

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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.