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Finding the Third Proportional to 15,121.50 and 33,261

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Solution

The third proportional to 15,121.50 and 33,261 is: 73,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.50 : 33,261 = 33,261 : x
  2. Step 2: Convert to fraction form
    15,121.50/33,261 = 33,261/x
  3. Step 3: Cross multiply
    15,121.50x = 33,261 × 33,261
  4. Step 4: Simplify right side
    15,121.50x = 1,106,294,121
  5. Step 5: Solve for x
    x = 1,106,294,121/15,121.50
  6. Step 6: Final answer
    x = 73,160.34

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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.