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Finding the Fourth Proportional to 324,187.72, 485,948.94 and 124,454.32

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Solution

The fourth proportional to 324,187.72, 485,948.94 and 124,454.32 is: 186,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,187.72 : 485,948.94 = 124,454.32 : x
  2. Step 2: Convert to fraction form
    324,187.72/485,948.94 = 124,454.32/x
  3. Step 3: Cross multiply
    324,187.72x = 485,948.94 × 124,454.32
  4. Step 4: Simplify right side
    324,187.72x = 60,478,444,882.42
  5. Step 5: Solve for x
    x = 60,478,444,882.42/324,187.72
  6. Step 6: Final answer
    x = 186,553.78

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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.