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Finding the Third Proportional to 672.75 and 1,044

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Solution

The third proportional to 672.75 and 1,044 is: 1,620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.75 : 1,044 = 1,044 : x
  2. Step 2: Convert to fraction form
    672.75/1,044 = 1,044/x
  3. Step 3: Cross multiply
    672.75x = 1,044 × 1,044
  4. Step 4: Simplify right side
    672.75x = 1,089,936
  5. Step 5: Solve for x
    x = 1,089,936/672.75
  6. Step 6: Final answer
    x = 1,620.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.