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Finding the Fourth Proportional to 267.16, 400.81 and 113

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Solution

The fourth proportional to 267.16, 400.81 and 113 is: 169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.16 : 400.81 = 113 : x
  2. Step 2: Convert to fraction form
    267.16/400.81 = 113/x
  3. Step 3: Cross multiply
    267.16x = 400.81 × 113
  4. Step 4: Simplify right side
    267.16x = 45,291.53
  5. Step 5: Solve for x
    x = 45,291.53/267.16
  6. Step 6: Final answer
    x = 169.53

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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.