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Finding the Third Proportional to 474 and 765

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Solution

The third proportional to 474 and 765 is: 1,234.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    474 : 765 = 765 : x
  2. Step 2: Convert to fraction form
    474/765 = 765/x
  3. Step 3: Cross multiply
    474x = 765 × 765
  4. Step 4: Simplify right side
    474x = 585,225
  5. Step 5: Solve for x
    x = 585,225/474
  6. Step 6: Final answer
    x = 1,234.65

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.