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Finding the Third Proportional to 987 and 2,448

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Solution

The third proportional to 987 and 2,448 is: 6,071.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    987 : 2,448 = 2,448 : x
  2. Step 2: Convert to fraction form
    987/2,448 = 2,448/x
  3. Step 3: Cross multiply
    987x = 2,448 × 2,448
  4. Step 4: Simplify right side
    987x = 5,992,704
  5. Step 5: Solve for x
    x = 5,992,704/987
  6. Step 6: Final answer
    x = 6,071.64

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Why These Related Problems?

These problems maintain the same ratio (2.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.