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Finding the Third Proportional to 472 and 1,208

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Solution

The third proportional to 472 and 1,208 is: 3,091.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    472 : 1,208 = 1,208 : x
  2. Step 2: Convert to fraction form
    472/1,208 = 1,208/x
  3. Step 3: Cross multiply
    472x = 1,208 × 1,208
  4. Step 4: Simplify right side
    472x = 1,459,264
  5. Step 5: Solve for x
    x = 1,459,264/472
  6. Step 6: Final answer
    x = 3,091.66

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.