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Finding the Third Proportional to 665.50 and 1,193

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Solution

The third proportional to 665.50 and 1,193 is: 2,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.50 : 1,193 = 1,193 : x
  2. Step 2: Convert to fraction form
    665.50/1,193 = 1,193/x
  3. Step 3: Cross multiply
    665.50x = 1,193 × 1,193
  4. Step 4: Simplify right side
    665.50x = 1,423,249
  5. Step 5: Solve for x
    x = 1,423,249/665.50
  6. Step 6: Final answer
    x = 2,138.62

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.