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Finding the Third Proportional to 1,660 and 3,476

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Solution

The third proportional to 1,660 and 3,476 is: 7,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660 : 3,476 = 3,476 : x
  2. Step 2: Convert to fraction form
    1,660/3,476 = 3,476/x
  3. Step 3: Cross multiply
    1,660x = 3,476 × 3,476
  4. Step 4: Simplify right side
    1,660x = 12,082,576
  5. Step 5: Solve for x
    x = 12,082,576/1,660
  6. Step 6: Final answer
    x = 7,278.66

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.