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Finding the Third Proportional to 33,861 and 68,550

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Solution

The third proportional to 33,861 and 68,550 is: 138,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,861 : 68,550 = 68,550 : x
  2. Step 2: Convert to fraction form
    33,861/68,550 = 68,550/x
  3. Step 3: Cross multiply
    33,861x = 68,550 × 68,550
  4. Step 4: Simplify right side
    33,861x = 4,699,102,500
  5. Step 5: Solve for x
    x = 4,699,102,500/33,861
  6. Step 6: Final answer
    x = 138,776.25

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.