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Finding the Fourth Proportional to 425,496.92, 638,027.82 and 141,084.86

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Solution

The fourth proportional to 425,496.92, 638,027.82 and 141,084.86 is: 211,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,496.92 : 638,027.82 = 141,084.86 : x
  2. Step 2: Convert to fraction form
    425,496.92/638,027.82 = 141,084.86/x
  3. Step 3: Cross multiply
    425,496.92x = 638,027.82 × 141,084.86
  4. Step 4: Simplify right side
    425,496.92x = 90,016,062,470.67
  5. Step 5: Solve for x
    x = 90,016,062,470.67/425,496.92
  6. Step 6: Final answer
    x = 211,555.15

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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.