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Finding the Third Proportional to 19,113.75 and 20,571.75

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Solution

The third proportional to 19,113.75 and 20,571.75 is: 22,140.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.75 : 20,571.75 = 20,571.75 : x
  2. Step 2: Convert to fraction form
    19,113.75/20,571.75 = 20,571.75/x
  3. Step 3: Cross multiply
    19,113.75x = 20,571.75 × 20,571.75
  4. Step 4: Simplify right side
    19,113.75x = 423,196,898.06
  5. Step 5: Solve for x
    x = 423,196,898.06/19,113.75
  6. Step 6: Final answer
    x = 22,140.97

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.