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Finding the Fourth Proportional to 247,812.70, 341,983.94 and 140,380.43

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Solution

The fourth proportional to 247,812.70, 341,983.94 and 140,380.43 is: 193,726.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,812.70 : 341,983.94 = 140,380.43 : x
  2. Step 2: Convert to fraction form
    247,812.70/341,983.94 = 140,380.43/x
  3. Step 3: Cross multiply
    247,812.70x = 341,983.94 × 140,380.43
  4. Step 4: Simplify right side
    247,812.70x = 48,007,852,550.29
  5. Step 5: Solve for x
    x = 48,007,852,550.29/247,812.70
  6. Step 6: Final answer
    x = 193,726.36

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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.