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Finding the Third Proportional to 1,110.38 and 1,728

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Solution

The third proportional to 1,110.38 and 1,728 is: 2,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.38 : 1,728 = 1,728 : x
  2. Step 2: Convert to fraction form
    1,110.38/1,728 = 1,728/x
  3. Step 3: Cross multiply
    1,110.38x = 1,728 × 1,728
  4. Step 4: Simplify right side
    1,110.38x = 2,985,984
  5. Step 5: Solve for x
    x = 2,985,984/1,110.38
  6. Step 6: Final answer
    x = 2,689.17

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.