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Finding the Third Proportional to 1,044 and 1,080

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Solution

The third proportional to 1,044 and 1,080 is: 1,117.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044 : 1,080 = 1,080 : x
  2. Step 2: Convert to fraction form
    1,044/1,080 = 1,080/x
  3. Step 3: Cross multiply
    1,044x = 1,080 × 1,080
  4. Step 4: Simplify right side
    1,044x = 1,166,400
  5. Step 5: Solve for x
    x = 1,166,400/1,044
  6. Step 6: Final answer
    x = 1,117.24

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.