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Finding the Third Proportional to 2,255.34 and 4,989.09

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Solution

The third proportional to 2,255.34 and 4,989.09 is: 11,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.34 : 4,989.09 = 4,989.09 : x
  2. Step 2: Convert to fraction form
    2,255.34/4,989.09 = 4,989.09/x
  3. Step 3: Cross multiply
    2,255.34x = 4,989.09 × 4,989.09
  4. Step 4: Simplify right side
    2,255.34x = 24,891,056.45
  5. Step 5: Solve for x
    x = 24,891,056.45/2,255.34
  6. Step 6: Final answer
    x = 11,036.48

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.