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Finding the Third Proportional to 984 and 1,415

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Solution

The third proportional to 984 and 1,415 is: 2,034.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    984 : 1,415 = 1,415 : x
  2. Step 2: Convert to fraction form
    984/1,415 = 1,415/x
  3. Step 3: Cross multiply
    984x = 1,415 × 1,415
  4. Step 4: Simplify right side
    984x = 2,002,225
  5. Step 5: Solve for x
    x = 2,002,225/984
  6. Step 6: Final answer
    x = 2,034.78

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.