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Finding the Fourth Proportional to 267, 400.36 and 112.76

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Solution

The fourth proportional to 267, 400.36 and 112.76 is: 169.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    267 : 400.36 = 112.76 : x
  2. Step 2: Convert to fraction form
    267/400.36 = 112.76/x
  3. Step 3: Cross multiply
    267x = 400.36 × 112.76
  4. Step 4: Simplify right side
    267x = 45,144.59
  5. Step 5: Solve for x
    x = 45,144.59/267
  6. Step 6: Final answer
    x = 169.08

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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.