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Finding the Third Proportional to 11,191.50 and 25,431

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Solution

The third proportional to 11,191.50 and 25,431 is: 57,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.50 : 25,431 = 25,431 : x
  2. Step 2: Convert to fraction form
    11,191.50/25,431 = 25,431/x
  3. Step 3: Cross multiply
    11,191.50x = 25,431 × 25,431
  4. Step 4: Simplify right side
    11,191.50x = 646,735,761
  5. Step 5: Solve for x
    x = 646,735,761/11,191.50
  6. Step 6: Final answer
    x = 57,788.12

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Why These Related Problems?

These problems maintain the same ratio (2.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.