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Finding the Third Proportional to 768 and 2,088

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Solution

The third proportional to 768 and 2,088 is: 5,676.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    768 : 2,088 = 2,088 : x
  2. Step 2: Convert to fraction form
    768/2,088 = 2,088/x
  3. Step 3: Cross multiply
    768x = 2,088 × 2,088
  4. Step 4: Simplify right side
    768x = 4,359,744
  5. Step 5: Solve for x
    x = 4,359,744/768
  6. Step 6: Final answer
    x = 5,676.75

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.