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Finding the Third Proportional to 14,890 and 19,689

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Solution

The third proportional to 14,890 and 19,689 is: 26,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,890 : 19,689 = 19,689 : x
  2. Step 2: Convert to fraction form
    14,890/19,689 = 19,689/x
  3. Step 3: Cross multiply
    14,890x = 19,689 × 19,689
  4. Step 4: Simplify right side
    14,890x = 387,656,721
  5. Step 5: Solve for x
    x = 387,656,721/14,890
  6. Step 6: Final answer
    x = 26,034.70

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.