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Finding the Fourth Proportional to 274,251.15, 411,212.70 and 141,390.90

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Solution

The fourth proportional to 274,251.15, 411,212.70 and 141,390.90 is: 212,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,251.15 : 411,212.70 = 141,390.90 : x
  2. Step 2: Convert to fraction form
    274,251.15/411,212.70 = 141,390.90/x
  3. Step 3: Cross multiply
    274,251.15x = 411,212.70 × 141,390.90
  4. Step 4: Simplify right side
    274,251.15x = 58,141,733,744.43
  5. Step 5: Solve for x
    x = 58,141,733,744.43/274,251.15
  6. Step 6: Final answer
    x = 212,001.79

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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.