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Finding the Third Proportional to 542.75 and 958.75

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Solution

The third proportional to 542.75 and 958.75 is: 1,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.75 : 958.75 = 958.75 : x
  2. Step 2: Convert to fraction form
    542.75/958.75 = 958.75/x
  3. Step 3: Cross multiply
    542.75x = 958.75 × 958.75
  4. Step 4: Simplify right side
    542.75x = 919,201.56
  5. Step 5: Solve for x
    x = 919,201.56/542.75
  6. Step 6: Final answer
    x = 1,693.60

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.