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Finding the Third Proportional to 726 and 1,127.06

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Solution

The third proportional to 726 and 1,127.06 is: 1,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    726 : 1,127.06 = 1,127.06 : x
  2. Step 2: Convert to fraction form
    726/1,127.06 = 1,127.06/x
  3. Step 3: Cross multiply
    726x = 1,127.06 × 1,127.06
  4. Step 4: Simplify right side
    726x = 1,270,269.88
  5. Step 5: Solve for x
    x = 1,270,269.88/726
  6. Step 6: Final answer
    x = 1,749.68

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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.