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Finding the Fourth Proportional to 247,121.60, 341,024.11 and 139,687.85

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Solution

The fourth proportional to 247,121.60, 341,024.11 and 139,687.85 is: 192,767.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,121.60 : 341,024.11 = 139,687.85 : x
  2. Step 2: Convert to fraction form
    247,121.60/341,024.11 = 139,687.85/x
  3. Step 3: Cross multiply
    247,121.60x = 341,024.11 × 139,687.85
  4. Step 4: Simplify right side
    247,121.60x = 47,636,924,724.06
  5. Step 5: Solve for x
    x = 47,636,924,724.06/247,121.60
  6. Step 6: Final answer
    x = 192,767.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.