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Finding the Fourth Proportional to 372,978.95, 559,956.26 and 221,452.66

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Solution

The fourth proportional to 372,978.95, 559,956.26 and 221,452.66 is: 332,468.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,978.95 : 559,956.26 = 221,452.66 : x
  2. Step 2: Convert to fraction form
    372,978.95/559,956.26 = 221,452.66/x
  3. Step 3: Cross multiply
    372,978.95x = 559,956.26 × 221,452.66
  4. Step 4: Simplify right side
    372,978.95x = 124,003,799,353.61
  5. Step 5: Solve for x
    x = 124,003,799,353.61/372,978.95
  6. Step 6: Final answer
    x = 332,468.63

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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.