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Finding the Third Proportional to 38.75 and 54.25

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Solution

The third proportional to 38.75 and 54.25 is: 75.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.75 : 54.25 = 54.25 : x
  2. Step 2: Convert to fraction form
    38.75/54.25 = 54.25/x
  3. Step 3: Cross multiply
    38.75x = 54.25 × 54.25
  4. Step 4: Simplify right side
    38.75x = 2,943.06
  5. Step 5: Solve for x
    x = 2,943.06/38.75
  6. Step 6: Final answer
    x = 75.95

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.