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Finding the Third Proportional to 694.13 and 993.94

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Solution

The third proportional to 694.13 and 993.94 is: 1,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.13 : 993.94 = 993.94 : x
  2. Step 2: Convert to fraction form
    694.13/993.94 = 993.94/x
  3. Step 3: Cross multiply
    694.13x = 993.94 × 993.94
  4. Step 4: Simplify right side
    694.13x = 987,911.75
  5. Step 5: Solve for x
    x = 987,911.75/694.13
  6. Step 6: Final answer
    x = 1,423.25

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.