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Finding the Third Proportional to 495.28 and 769.92

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Solution

The third proportional to 495.28 and 769.92 is: 1,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.28 : 769.92 = 769.92 : x
  2. Step 2: Convert to fraction form
    495.28/769.92 = 769.92/x
  3. Step 3: Cross multiply
    495.28x = 769.92 × 769.92
  4. Step 4: Simplify right side
    495.28x = 592,779.69
  5. Step 5: Solve for x
    x = 592,779.69/495.28
  6. Step 6: Final answer
    x = 1,196.85

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.