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Finding the Fourth Proportional to 17,793.21, 26,689.50 and 5,313.27

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Solution

The fourth proportional to 17,793.21, 26,689.50 and 5,313.27 is: 7,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,793.21 : 26,689.50 = 5,313.27 : x
  2. Step 2: Convert to fraction form
    17,793.21/26,689.50 = 5,313.27/x
  3. Step 3: Cross multiply
    17,793.21x = 26,689.50 × 5,313.27
  4. Step 4: Simplify right side
    17,793.21x = 141,808,519.67
  5. Step 5: Solve for x
    x = 141,808,519.67/17,793.21
  6. Step 6: Final answer
    x = 7,969.81

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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.