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Finding the Third Proportional to 994 and 1,379

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Solution

The third proportional to 994 and 1,379 is: 1,913.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    994 : 1,379 = 1,379 : x
  2. Step 2: Convert to fraction form
    994/1,379 = 1,379/x
  3. Step 3: Cross multiply
    994x = 1,379 × 1,379
  4. Step 4: Simplify right side
    994x = 1,901,641
  5. Step 5: Solve for x
    x = 1,901,641/994
  6. Step 6: Final answer
    x = 1,913.12

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.