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Finding the Third Proportional to 12,920 and 14,024

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Solution

The third proportional to 12,920 and 14,024 is: 15,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920 : 14,024 = 14,024 : x
  2. Step 2: Convert to fraction form
    12,920/14,024 = 14,024/x
  3. Step 3: Cross multiply
    12,920x = 14,024 × 14,024
  4. Step 4: Simplify right side
    12,920x = 196,672,576
  5. Step 5: Solve for x
    x = 196,672,576/12,920
  6. Step 6: Final answer
    x = 15,222.34

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.