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Finding the Fourth Proportional to 234,879.20, 352,330.66 and 66,411.62

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Solution

The fourth proportional to 234,879.20, 352,330.66 and 66,411.62 is: 99,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,879.20 : 352,330.66 = 66,411.62 : x
  2. Step 2: Convert to fraction form
    234,879.20/352,330.66 = 66,411.62/x
  3. Step 3: Cross multiply
    234,879.20x = 352,330.66 × 66,411.62
  4. Step 4: Simplify right side
    234,879.20x = 23,398,849,906.27
  5. Step 5: Solve for x
    x = 23,398,849,906.27/234,879.20
  6. Step 6: Final answer
    x = 99,620.78

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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.