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Finding the Third Proportional to 126,428 and 271,600

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Solution

The third proportional to 126,428 and 271,600 is: 583,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428 : 271,600 = 271,600 : x
  2. Step 2: Convert to fraction form
    126,428/271,600 = 271,600/x
  3. Step 3: Cross multiply
    126,428x = 271,600 × 271,600
  4. Step 4: Simplify right side
    126,428x = 73,766,560,000
  5. Step 5: Solve for x
    x = 73,766,560,000/126,428
  6. Step 6: Final answer
    x = 583,466.95

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.