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Finding the Third Proportional to 1,308 and 3,162

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Solution

The third proportional to 1,308 and 3,162 is: 7,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308 : 3,162 = 3,162 : x
  2. Step 2: Convert to fraction form
    1,308/3,162 = 3,162/x
  3. Step 3: Cross multiply
    1,308x = 3,162 × 3,162
  4. Step 4: Simplify right side
    1,308x = 9,998,244
  5. Step 5: Solve for x
    x = 9,998,244/1,308
  6. Step 6: Final answer
    x = 7,643.92

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.