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Finding the Third Proportional to 1,966.50 and 4,257

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Solution

The third proportional to 1,966.50 and 4,257 is: 9,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.50 : 4,257 = 4,257 : x
  2. Step 2: Convert to fraction form
    1,966.50/4,257 = 4,257/x
  3. Step 3: Cross multiply
    1,966.50x = 4,257 × 4,257
  4. Step 4: Simplify right side
    1,966.50x = 18,122,049
  5. Step 5: Solve for x
    x = 18,122,049/1,966.50
  6. Step 6: Final answer
    x = 9,215.38

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.