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Finding the Fourth Proportional to 89.84, 123.71 and 67.97

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Solution

The fourth proportional to 89.84, 123.71 and 67.97 is: 93.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.84 : 123.71 = 67.97 : x
  2. Step 2: Convert to fraction form
    89.84/123.71 = 67.97/x
  3. Step 3: Cross multiply
    89.84x = 123.71 × 67.97
  4. Step 4: Simplify right side
    89.84x = 8,408.57
  5. Step 5: Solve for x
    x = 8,408.57/89.84
  6. Step 6: Final answer
    x = 93.59

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.