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Finding the Third Proportional to 77.25 and 111.94

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Solution

The third proportional to 77.25 and 111.94 is: 162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.25 : 111.94 = 111.94 : x
  2. Step 2: Convert to fraction form
    77.25/111.94 = 111.94/x
  3. Step 3: Cross multiply
    77.25x = 111.94 × 111.94
  4. Step 4: Simplify right side
    77.25x = 12,530.00
  5. Step 5: Solve for x
    x = 12,530.00/77.25
  6. Step 6: Final answer
    x = 162.20

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These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.