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Finding the Third Proportional to 12,968 and 19,964

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Solution

The third proportional to 12,968 and 19,964 is: 30,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968 : 19,964 = 19,964 : x
  2. Step 2: Convert to fraction form
    12,968/19,964 = 19,964/x
  3. Step 3: Cross multiply
    12,968x = 19,964 × 19,964
  4. Step 4: Simplify right side
    12,968x = 398,561,296
  5. Step 5: Solve for x
    x = 398,561,296/12,968
  6. Step 6: Final answer
    x = 30,734.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.