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Finding the Fourth Proportional to 372,440.25, 558,770.54 and 214,781.85

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Solution

The fourth proportional to 372,440.25, 558,770.54 and 214,781.85 is: 322,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,440.25 : 558,770.54 = 214,781.85 : x
  2. Step 2: Convert to fraction form
    372,440.25/558,770.54 = 214,781.85/x
  3. Step 3: Cross multiply
    372,440.25x = 558,770.54 × 214,781.85
  4. Step 4: Simplify right side
    372,440.25x = 120,013,769,232.79
  5. Step 5: Solve for x
    x = 120,013,769,232.79/372,440.25
  6. Step 6: Final answer
    x = 322,236.30

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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.