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Finding the Third Proportional to 14,920 and 19,788

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Solution

The third proportional to 14,920 and 19,788 is: 26,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920 : 19,788 = 19,788 : x
  2. Step 2: Convert to fraction form
    14,920/19,788 = 19,788/x
  3. Step 3: Cross multiply
    14,920x = 19,788 × 19,788
  4. Step 4: Simplify right side
    14,920x = 391,564,944
  5. Step 5: Solve for x
    x = 391,564,944/14,920
  6. Step 6: Final answer
    x = 26,244.30

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.