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Finding the Third Proportional to 11,236 and 15,210

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Solution

The third proportional to 11,236 and 15,210 is: 20,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,236 : 15,210 = 15,210 : x
  2. Step 2: Convert to fraction form
    11,236/15,210 = 15,210/x
  3. Step 3: Cross multiply
    11,236x = 15,210 × 15,210
  4. Step 4: Simplify right side
    11,236x = 231,344,100
  5. Step 5: Solve for x
    x = 231,344,100/11,236
  6. Step 6: Final answer
    x = 20,589.54

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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.