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Finding the Third Proportional to 18,722.50 and 40,962

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Solution

The third proportional to 18,722.50 and 40,962 is: 89,618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.50 : 40,962 = 40,962 : x
  2. Step 2: Convert to fraction form
    18,722.50/40,962 = 40,962/x
  3. Step 3: Cross multiply
    18,722.50x = 40,962 × 40,962
  4. Step 4: Simplify right side
    18,722.50x = 1,677,885,444
  5. Step 5: Solve for x
    x = 1,677,885,444/18,722.50
  6. Step 6: Final answer
    x = 89,618.66

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.