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Finding the Third Proportional to 744.19 and 992.88

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Solution

The third proportional to 744.19 and 992.88 is: 1,324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.19 : 992.88 = 992.88 : x
  2. Step 2: Convert to fraction form
    744.19/992.88 = 992.88/x
  3. Step 3: Cross multiply
    744.19x = 992.88 × 992.88
  4. Step 4: Simplify right side
    744.19x = 985,816.28
  5. Step 5: Solve for x
    x = 985,816.28/744.19
  6. Step 6: Final answer
    x = 1,324.69

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.