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Finding the Fourth Proportional to 82.67, 124.05 and 39.32

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Solution

The fourth proportional to 82.67, 124.05 and 39.32 is: 58.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.67 : 124.05 = 39.32 : x
  2. Step 2: Convert to fraction form
    82.67/124.05 = 39.32/x
  3. Step 3: Cross multiply
    82.67x = 124.05 × 39.32
  4. Step 4: Simplify right side
    82.67x = 4,876.83
  5. Step 5: Solve for x
    x = 4,876.83/82.67
  6. Step 6: Final answer
    x = 58.99

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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.