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Finding the Third Proportional to 18,991 and 41,563

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Solution

The third proportional to 18,991 and 41,563 is: 90,963.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991 : 41,563 = 41,563 : x
  2. Step 2: Convert to fraction form
    18,991/41,563 = 41,563/x
  3. Step 3: Cross multiply
    18,991x = 41,563 × 41,563
  4. Step 4: Simplify right side
    18,991x = 1,727,482,969
  5. Step 5: Solve for x
    x = 1,727,482,969/18,991
  6. Step 6: Final answer
    x = 90,963.24

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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.