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Finding the Third Proportional to 33,558 and 51,309

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Solution

The third proportional to 33,558 and 51,309 is: 78,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,558 : 51,309 = 51,309 : x
  2. Step 2: Convert to fraction form
    33,558/51,309 = 51,309/x
  3. Step 3: Cross multiply
    33,558x = 51,309 × 51,309
  4. Step 4: Simplify right side
    33,558x = 2,632,613,481
  5. Step 5: Solve for x
    x = 2,632,613,481/33,558
  6. Step 6: Final answer
    x = 78,449.65

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.