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Finding the Third Proportional to 28.13 and 33.84

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Solution

The third proportional to 28.13 and 33.84 is: 40.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.13 : 33.84 = 33.84 : x
  2. Step 2: Convert to fraction form
    28.13/33.84 = 33.84/x
  3. Step 3: Cross multiply
    28.13x = 33.84 × 33.84
  4. Step 4: Simplify right side
    28.13x = 1,145.40
  5. Step 5: Solve for x
    x = 1,145.40/28.13
  6. Step 6: Final answer
    x = 40.73

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.