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Finding the Third Proportional to 16,989 and 22,201.50

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Solution

The third proportional to 16,989 and 22,201.50 is: 29,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989 : 22,201.50 = 22,201.50 : x
  2. Step 2: Convert to fraction form
    16,989/22,201.50 = 22,201.50/x
  3. Step 3: Cross multiply
    16,989x = 22,201.50 × 22,201.50
  4. Step 4: Simplify right side
    16,989x = 492,906,602.25
  5. Step 5: Solve for x
    x = 492,906,602.25/16,989
  6. Step 6: Final answer
    x = 29,013.28

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.