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Finding the Fourth Proportional to 8,635.62, 12,942.54 and 3,699.42

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Solution

The fourth proportional to 8,635.62, 12,942.54 and 3,699.42 is: 5,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.62 : 12,942.54 = 3,699.42 : x
  2. Step 2: Convert to fraction form
    8,635.62/12,942.54 = 3,699.42/x
  3. Step 3: Cross multiply
    8,635.62x = 12,942.54 × 3,699.42
  4. Step 4: Simplify right side
    8,635.62x = 47,879,891.33
  5. Step 5: Solve for x
    x = 47,879,891.33/8,635.62
  6. Step 6: Final answer
    x = 5,544.46

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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.