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Finding the Third Proportional to 33,939 and 74,520

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Solution

The third proportional to 33,939 and 74,520 is: 163,623.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,939 : 74,520 = 74,520 : x
  2. Step 2: Convert to fraction form
    33,939/74,520 = 74,520/x
  3. Step 3: Cross multiply
    33,939x = 74,520 × 74,520
  4. Step 4: Simplify right side
    33,939x = 5,553,230,400
  5. Step 5: Solve for x
    x = 5,553,230,400/33,939
  6. Step 6: Final answer
    x = 163,623.87

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.