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Finding the Third Proportional to 6,990 and 14,936

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Solution

The third proportional to 6,990 and 14,936 is: 31,914.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990 : 14,936 = 14,936 : x
  2. Step 2: Convert to fraction form
    6,990/14,936 = 14,936/x
  3. Step 3: Cross multiply
    6,990x = 14,936 × 14,936
  4. Step 4: Simplify right side
    6,990x = 223,084,096
  5. Step 5: Solve for x
    x = 223,084,096/6,990
  6. Step 6: Final answer
    x = 31,914.75

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.