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Finding the Fourth Proportional to 317,640.47, 476,359.50 and 104,358.86

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Solution

The fourth proportional to 317,640.47, 476,359.50 and 104,358.86 is: 156,505.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,640.47 : 476,359.50 = 104,358.86 : x
  2. Step 2: Convert to fraction form
    317,640.47/476,359.50 = 104,358.86/x
  3. Step 3: Cross multiply
    317,640.47x = 476,359.50 × 104,358.86
  4. Step 4: Simplify right side
    317,640.47x = 49,712,334,370.17
  5. Step 5: Solve for x
    x = 49,712,334,370.17/317,640.47
  6. Step 6: Final answer
    x = 156,505.04

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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.