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Finding the Fourth Proportional to 20,704.59, 31,053.81 and 7,553.88

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Solution

The fourth proportional to 20,704.59, 31,053.81 and 7,553.88 is: 11,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.59 : 31,053.81 = 7,553.88 : x
  2. Step 2: Convert to fraction form
    20,704.59/31,053.81 = 7,553.88/x
  3. Step 3: Cross multiply
    20,704.59x = 31,053.81 × 7,553.88
  4. Step 4: Simplify right side
    20,704.59x = 234,576,806.21
  5. Step 5: Solve for x
    x = 234,576,806.21/20,704.59
  6. Step 6: Final answer
    x = 11,329.70

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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.