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Finding the Third Proportional to 4,939 and 6,790

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Solution

The third proportional to 4,939 and 6,790 is: 9,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939 : 6,790 = 6,790 : x
  2. Step 2: Convert to fraction form
    4,939/6,790 = 6,790/x
  3. Step 3: Cross multiply
    4,939x = 6,790 × 6,790
  4. Step 4: Simplify right side
    4,939x = 46,104,100
  5. Step 5: Solve for x
    x = 46,104,100/4,939
  6. Step 6: Final answer
    x = 9,334.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.