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Finding the Third Proportional to 1,982 and 4,330

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Solution

The third proportional to 1,982 and 4,330 is: 9,459.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982 : 4,330 = 4,330 : x
  2. Step 2: Convert to fraction form
    1,982/4,330 = 4,330/x
  3. Step 3: Cross multiply
    1,982x = 4,330 × 4,330
  4. Step 4: Simplify right side
    1,982x = 18,748,900
  5. Step 5: Solve for x
    x = 18,748,900/1,982
  6. Step 6: Final answer
    x = 9,459.59

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.