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Finding the Third Proportional to 2,748 and 5,172

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Solution

The third proportional to 2,748 and 5,172 is: 9,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748 : 5,172 = 5,172 : x
  2. Step 2: Convert to fraction form
    2,748/5,172 = 5,172/x
  3. Step 3: Cross multiply
    2,748x = 5,172 × 5,172
  4. Step 4: Simplify right side
    2,748x = 26,749,584
  5. Step 5: Solve for x
    x = 26,749,584/2,748
  6. Step 6: Final answer
    x = 9,734.20

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.