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Finding the Third Proportional to 27.56 and 48.38

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Solution

The third proportional to 27.56 and 48.38 is: 84.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.56 : 48.38 = 48.38 : x
  2. Step 2: Convert to fraction form
    27.56/48.38 = 48.38/x
  3. Step 3: Cross multiply
    27.56x = 48.38 × 48.38
  4. Step 4: Simplify right side
    27.56x = 2,340.14
  5. Step 5: Solve for x
    x = 2,340.14/27.56
  6. Step 6: Final answer
    x = 84.90

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.