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Finding the Third Proportional to 1,981 and 4,373

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Solution

The third proportional to 1,981 and 4,373 is: 9,653.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981 : 4,373 = 4,373 : x
  2. Step 2: Convert to fraction form
    1,981/4,373 = 4,373/x
  3. Step 3: Cross multiply
    1,981x = 4,373 × 4,373
  4. Step 4: Simplify right side
    1,981x = 19,123,129
  5. Step 5: Solve for x
    x = 19,123,129/1,981
  6. Step 6: Final answer
    x = 9,653.27

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.