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Finding the Fourth Proportional to 82.32, 123.41 and 38.96

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Solution

The fourth proportional to 82.32, 123.41 and 38.96 is: 58.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.32 : 123.41 = 38.96 : x
  2. Step 2: Convert to fraction form
    82.32/123.41 = 38.96/x
  3. Step 3: Cross multiply
    82.32x = 123.41 × 38.96
  4. Step 4: Simplify right side
    82.32x = 4,807.96
  5. Step 5: Solve for x
    x = 4,807.96/82.32
  6. Step 6: Final answer
    x = 58.41

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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.