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Finding the Fourth Proportional to 3,696.80, 5,545.46 and 1,163.67

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Solution

The fourth proportional to 3,696.80, 5,545.46 and 1,163.67 is: 1,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,696.80 : 5,545.46 = 1,163.67 : x
  2. Step 2: Convert to fraction form
    3,696.80/5,545.46 = 1,163.67/x
  3. Step 3: Cross multiply
    3,696.80x = 5,545.46 × 1,163.67
  4. Step 4: Simplify right side
    3,696.80x = 6,453,114.34
  5. Step 5: Solve for x
    x = 6,453,114.34/3,696.80
  6. Step 6: Final answer
    x = 1,745.60

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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.