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Finding the Third Proportional to 12,981 and 25,314

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Solution

The third proportional to 12,981 and 25,314 is: 49,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981 : 25,314 = 25,314 : x
  2. Step 2: Convert to fraction form
    12,981/25,314 = 25,314/x
  3. Step 3: Cross multiply
    12,981x = 25,314 × 25,314
  4. Step 4: Simplify right side
    12,981x = 640,798,596
  5. Step 5: Solve for x
    x = 640,798,596/12,981
  6. Step 6: Final answer
    x = 49,364.35

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.