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Finding the Third Proportional to 533 and 1,138

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Solution

The third proportional to 533 and 1,138 is: 2,429.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    533 : 1,138 = 1,138 : x
  2. Step 2: Convert to fraction form
    533/1,138 = 1,138/x
  3. Step 3: Cross multiply
    533x = 1,138 × 1,138
  4. Step 4: Simplify right side
    533x = 1,295,044
  5. Step 5: Solve for x
    x = 1,295,044/533
  6. Step 6: Final answer
    x = 2,429.73

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.