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Finding the Fourth Proportional to 321,016.92, 481,262.67 and 121,223.94

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Solution

The fourth proportional to 321,016.92, 481,262.67 and 121,223.94 is: 181,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,016.92 : 481,262.67 = 121,223.94 : x
  2. Step 2: Convert to fraction form
    321,016.92/481,262.67 = 121,223.94/x
  3. Step 3: Cross multiply
    321,016.92x = 481,262.67 × 121,223.94
  4. Step 4: Simplify right side
    321,016.92x = 58,340,557,032.32
  5. Step 5: Solve for x
    x = 58,340,557,032.32/321,016.92
  6. Step 6: Final answer
    x = 181,736.70

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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.