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Finding the Third Proportional to 18,987.75 and 41,322.66

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Solution

The third proportional to 18,987.75 and 41,322.66 is: 89,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.75 : 41,322.66 = 41,322.66 : x
  2. Step 2: Convert to fraction form
    18,987.75/41,322.66 = 41,322.66/x
  3. Step 3: Cross multiply
    18,987.75x = 41,322.66 × 41,322.66
  4. Step 4: Simplify right side
    18,987.75x = 1,707,561,919.56
  5. Step 5: Solve for x
    x = 1,707,561,919.56/18,987.75
  6. Step 6: Final answer
    x = 89,929.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.