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Finding the Third Proportional to 22,191 and 29,991

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Solution

The third proportional to 22,191 and 29,991 is: 40,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,191 : 29,991 = 29,991 : x
  2. Step 2: Convert to fraction form
    22,191/29,991 = 29,991/x
  3. Step 3: Cross multiply
    22,191x = 29,991 × 29,991
  4. Step 4: Simplify right side
    22,191x = 899,460,081
  5. Step 5: Solve for x
    x = 899,460,081/22,191
  6. Step 6: Final answer
    x = 40,532.65

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.