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Finding the Third Proportional to 745 and 2,008

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Solution

The third proportional to 745 and 2,008 is: 5,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    745 : 2,008 = 2,008 : x
  2. Step 2: Convert to fraction form
    745/2,008 = 2,008/x
  3. Step 3: Cross multiply
    745x = 2,008 × 2,008
  4. Step 4: Simplify right side
    745x = 4,032,064
  5. Step 5: Solve for x
    x = 4,032,064/745
  6. Step 6: Final answer
    x = 5,412.17

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.