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Finding the Third Proportional to 702 and 928.69

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Solution

The third proportional to 702 and 928.69 is: 1,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    702 : 928.69 = 928.69 : x
  2. Step 2: Convert to fraction form
    702/928.69 = 928.69/x
  3. Step 3: Cross multiply
    702x = 928.69 × 928.69
  4. Step 4: Simplify right side
    702x = 862,460.47
  5. Step 5: Solve for x
    x = 862,460.47/702
  6. Step 6: Final answer
    x = 1,228.58

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.