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Finding the Fourth Proportional to 3,676.02, 5,514.95 and 1,078.96

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Solution

The fourth proportional to 3,676.02, 5,514.95 and 1,078.96 is: 1,618.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.02 : 5,514.95 = 1,078.96 : x
  2. Step 2: Convert to fraction form
    3,676.02/5,514.95 = 1,078.96/x
  3. Step 3: Cross multiply
    3,676.02x = 5,514.95 × 1,078.96
  4. Step 4: Simplify right side
    3,676.02x = 5,950,413.15
  5. Step 5: Solve for x
    x = 5,950,413.15/3,676.02
  6. Step 6: Final answer
    x = 1,618.71

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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.