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Finding the Third Proportional to 1,674 and 4,509

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Solution

The third proportional to 1,674 and 4,509 is: 12,145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674 : 4,509 = 4,509 : x
  2. Step 2: Convert to fraction form
    1,674/4,509 = 4,509/x
  3. Step 3: Cross multiply
    1,674x = 4,509 × 4,509
  4. Step 4: Simplify right side
    1,674x = 20,331,081
  5. Step 5: Solve for x
    x = 20,331,081/1,674
  6. Step 6: Final answer
    x = 12,145.21

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.