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Finding the Third Proportional to 768 and 1,101

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Solution

The third proportional to 768 and 1,101 is: 1,578.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    768 : 1,101 = 1,101 : x
  2. Step 2: Convert to fraction form
    768/1,101 = 1,101/x
  3. Step 3: Cross multiply
    768x = 1,101 × 1,101
  4. Step 4: Simplify right side
    768x = 1,212,201
  5. Step 5: Solve for x
    x = 1,212,201/768
  6. Step 6: Final answer
    x = 1,578.39

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.