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Finding the Fourth Proportional to 67.16, 100.71 and 34.63

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Solution

The fourth proportional to 67.16, 100.71 and 34.63 is: 51.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.16 : 100.71 = 34.63 : x
  2. Step 2: Convert to fraction form
    67.16/100.71 = 34.63/x
  3. Step 3: Cross multiply
    67.16x = 100.71 × 34.63
  4. Step 4: Simplify right side
    67.16x = 3,487.34
  5. Step 5: Solve for x
    x = 3,487.34/67.16
  6. Step 6: Final answer
    x = 51.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.