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Finding the Fourth Proportional to 324,068.70, 485,872.65 and 124,311.90

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Solution

The fourth proportional to 324,068.70, 485,872.65 and 124,311.90 is: 186,379.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,068.70 : 485,872.65 = 124,311.90 : x
  2. Step 2: Convert to fraction form
    324,068.70/485,872.65 = 124,311.90/x
  3. Step 3: Cross multiply
    324,068.70x = 485,872.65 × 124,311.90
  4. Step 4: Simplify right side
    324,068.70x = 60,399,752,279.54
  5. Step 5: Solve for x
    x = 60,399,752,279.54/324,068.70
  6. Step 6: Final answer
    x = 186,379.47

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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.