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Finding the Fourth Proportional to 20,393.38, 30,571.95 and 7,244.02

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Solution

The fourth proportional to 20,393.38, 30,571.95 and 7,244.02 is: 10,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.38 : 30,571.95 = 7,244.02 : x
  2. Step 2: Convert to fraction form
    20,393.38/30,571.95 = 7,244.02/x
  3. Step 3: Cross multiply
    20,393.38x = 30,571.95 × 7,244.02
  4. Step 4: Simplify right side
    20,393.38x = 221,463,817.24
  5. Step 5: Solve for x
    x = 221,463,817.24/20,393.38
  6. Step 6: Final answer
    x = 10,859.59

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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.