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Finding the Fourth Proportional to 270,591.72, 405,773.43 and 81,079.02

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Solution

The fourth proportional to 270,591.72, 405,773.43 and 81,079.02 is: 121,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,591.72 : 405,773.43 = 81,079.02 : x
  2. Step 2: Convert to fraction form
    270,591.72/405,773.43 = 81,079.02/x
  3. Step 3: Cross multiply
    270,591.72x = 405,773.43 × 81,079.02
  4. Step 4: Simplify right side
    270,591.72x = 32,899,712,046.44
  5. Step 5: Solve for x
    x = 32,899,712,046.44/270,591.72
  6. Step 6: Final answer
    x = 121,584.33

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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.