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Finding the Fourth Proportional to 322,967.28, 445,691.60 and 179,724.86

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Solution

The fourth proportional to 322,967.28, 445,691.60 and 179,724.86 is: 248,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,967.28 : 445,691.60 = 179,724.86 : x
  2. Step 2: Convert to fraction form
    322,967.28/445,691.60 = 179,724.86/x
  3. Step 3: Cross multiply
    322,967.28x = 445,691.60 × 179,724.86
  4. Step 4: Simplify right side
    322,967.28x = 80,101,860,413.18
  5. Step 5: Solve for x
    x = 80,101,860,413.18/322,967.28
  6. Step 6: Final answer
    x = 248,018.50

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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.