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Finding the Third Proportional to 1,936 and 2,215

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Solution

The third proportional to 1,936 and 2,215 is: 2,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936 : 2,215 = 2,215 : x
  2. Step 2: Convert to fraction form
    1,936/2,215 = 2,215/x
  3. Step 3: Cross multiply
    1,936x = 2,215 × 2,215
  4. Step 4: Simplify right side
    1,936x = 4,906,225
  5. Step 5: Solve for x
    x = 4,906,225/1,936
  6. Step 6: Final answer
    x = 2,534.21

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.