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Finding the Fourth Proportional to 317,447.10, 476,170.65 and 247,378.86

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Solution

The fourth proportional to 317,447.10, 476,170.65 and 247,378.86 is: 371,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,447.10 : 476,170.65 = 247,378.86 : x
  2. Step 2: Convert to fraction form
    317,447.10/476,170.65 = 247,378.86/x
  3. Step 3: Cross multiply
    317,447.10x = 476,170.65 × 247,378.86
  4. Step 4: Simplify right side
    317,447.10x = 117,794,552,562.46
  5. Step 5: Solve for x
    x = 117,794,552,562.46/317,447.10
  6. Step 6: Final answer
    x = 371,068.29

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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.