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Finding the Fourth Proportional to 267.73, 401.64 and 105.46

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Solution

The fourth proportional to 267.73, 401.64 and 105.46 is: 158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.73 : 401.64 = 105.46 : x
  2. Step 2: Convert to fraction form
    267.73/401.64 = 105.46/x
  3. Step 3: Cross multiply
    267.73x = 401.64 × 105.46
  4. Step 4: Simplify right side
    267.73x = 42,356.95
  5. Step 5: Solve for x
    x = 42,356.95/267.73
  6. Step 6: Final answer
    x = 158.21

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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.