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Finding the Fourth Proportional to 267,630.91, 401,446.50 and 80,642.41

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Solution

The fourth proportional to 267,630.91, 401,446.50 and 80,642.41 is: 120,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,630.91 : 401,446.50 = 80,642.41 : x
  2. Step 2: Convert to fraction form
    267,630.91/401,446.50 = 80,642.41/x
  3. Step 3: Cross multiply
    267,630.91x = 401,446.50 × 80,642.41
  4. Step 4: Simplify right side
    267,630.91x = 32,373,613,246.07
  5. Step 5: Solve for x
    x = 32,373,613,246.07/267,630.91
  6. Step 6: Final answer
    x = 120,963.66

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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.