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Finding the Third Proportional to 1,486 and 3,212

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Solution

The third proportional to 1,486 and 3,212 is: 6,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486 : 3,212 = 3,212 : x
  2. Step 2: Convert to fraction form
    1,486/3,212 = 3,212/x
  3. Step 3: Cross multiply
    1,486x = 3,212 × 3,212
  4. Step 4: Simplify right side
    1,486x = 10,316,944
  5. Step 5: Solve for x
    x = 10,316,944/1,486
  6. Step 6: Final answer
    x = 6,942.76

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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.