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Finding the Fourth Proportional to 17,793.10, 26,668.05 and 7,921.90

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Solution

The fourth proportional to 17,793.10, 26,668.05 and 7,921.90 is: 11,873.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,793.10 : 26,668.05 = 7,921.90 : x
  2. Step 2: Convert to fraction form
    17,793.10/26,668.05 = 7,921.90/x
  3. Step 3: Cross multiply
    17,793.10x = 26,668.05 × 7,921.90
  4. Step 4: Simplify right side
    17,793.10x = 211,261,625.30
  5. Step 5: Solve for x
    x = 211,261,625.30/17,793.10
  6. Step 6: Final answer
    x = 11,873.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.