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Finding the Third Proportional to 33.54 and 72.07

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Solution

The third proportional to 33.54 and 72.07 is: 154.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.54 : 72.07 = 72.07 : x
  2. Step 2: Convert to fraction form
    33.54/72.07 = 72.07/x
  3. Step 3: Cross multiply
    33.54x = 72.07 × 72.07
  4. Step 4: Simplify right side
    33.54x = 5,194.13
  5. Step 5: Solve for x
    x = 5,194.13/33.54
  6. Step 6: Final answer
    x = 154.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.