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Finding the Third Proportional to 542 and 913

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Solution

The third proportional to 542 and 913 is: 1,537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    542 : 913 = 913 : x
  2. Step 2: Convert to fraction form
    542/913 = 913/x
  3. Step 3: Cross multiply
    542x = 913 × 913
  4. Step 4: Simplify right side
    542x = 833,569
  5. Step 5: Solve for x
    x = 833,569/542
  6. Step 6: Final answer
    x = 1,537.95

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.