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Finding the Third Proportional to 21,247.50 and 46,689

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Solution

The third proportional to 21,247.50 and 46,689 is: 102,593.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.50 : 46,689 = 46,689 : x
  2. Step 2: Convert to fraction form
    21,247.50/46,689 = 46,689/x
  3. Step 3: Cross multiply
    21,247.50x = 46,689 × 46,689
  4. Step 4: Simplify right side
    21,247.50x = 2,179,862,721
  5. Step 5: Solve for x
    x = 2,179,862,721/21,247.50
  6. Step 6: Final answer
    x = 102,593.84

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.