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Finding the Third Proportional to 712.69 and 1,103.06

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Solution

The third proportional to 712.69 and 1,103.06 is: 1,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.69 : 1,103.06 = 1,103.06 : x
  2. Step 2: Convert to fraction form
    712.69/1,103.06 = 1,103.06/x
  3. Step 3: Cross multiply
    712.69x = 1,103.06 × 1,103.06
  4. Step 4: Simplify right side
    712.69x = 1,216,746.88
  5. Step 5: Solve for x
    x = 1,216,746.88/712.69
  6. Step 6: Final answer
    x = 1,707.27

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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.