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Finding the Third Proportional to 20,876.25 and 43,803

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Solution

The third proportional to 20,876.25 and 43,803 is: 91,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.25 : 43,803 = 43,803 : x
  2. Step 2: Convert to fraction form
    20,876.25/43,803 = 43,803/x
  3. Step 3: Cross multiply
    20,876.25x = 43,803 × 43,803
  4. Step 4: Simplify right side
    20,876.25x = 1,918,702,809
  5. Step 5: Solve for x
    x = 1,918,702,809/20,876.25
  6. Step 6: Final answer
    x = 91,908.40

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.