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Finding the Third Proportional to 14,920 and 20,072

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Solution

The third proportional to 14,920 and 20,072 is: 27,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920 : 20,072 = 20,072 : x
  2. Step 2: Convert to fraction form
    14,920/20,072 = 20,072/x
  3. Step 3: Cross multiply
    14,920x = 20,072 × 20,072
  4. Step 4: Simplify right side
    14,920x = 402,885,184
  5. Step 5: Solve for x
    x = 402,885,184/14,920
  6. Step 6: Final answer
    x = 27,003.03

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.