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Finding the Fourth Proportional to 322,987.86, 445,719.78 and 179,745.48

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Solution

The fourth proportional to 322,987.86, 445,719.78 and 179,745.48 is: 248,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,987.86 : 445,719.78 = 179,745.48 : x
  2. Step 2: Convert to fraction form
    322,987.86/445,719.78 = 179,745.48/x
  3. Step 3: Cross multiply
    322,987.86x = 445,719.78 × 179,745.48
  4. Step 4: Simplify right side
    322,987.86x = 80,116,115,801.59
  5. Step 5: Solve for x
    x = 80,116,115,801.59/322,987.86
  6. Step 6: Final answer
    x = 248,046.83

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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.