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Finding the Fourth Proportional to 8,546.57, 12,818.22 and 3,619.67

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Solution

The fourth proportional to 8,546.57, 12,818.22 and 3,619.67 is: 5,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,546.57 : 12,818.22 = 3,619.67 : x
  2. Step 2: Convert to fraction form
    8,546.57/12,818.22 = 3,619.67/x
  3. Step 3: Cross multiply
    8,546.57x = 12,818.22 × 3,619.67
  4. Step 4: Simplify right side
    8,546.57x = 46,397,662.30
  5. Step 5: Solve for x
    x = 46,397,662.30/8,546.57
  6. Step 6: Final answer
    x = 5,428.81

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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.