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Finding the Third Proportional to 755 and 1,023

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Solution

The third proportional to 755 and 1,023 is: 1,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    755 : 1,023 = 1,023 : x
  2. Step 2: Convert to fraction form
    755/1,023 = 1,023/x
  3. Step 3: Cross multiply
    755x = 1,023 × 1,023
  4. Step 4: Simplify right side
    755x = 1,046,529
  5. Step 5: Solve for x
    x = 1,046,529/755
  6. Step 6: Final answer
    x = 1,386.13

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.