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Finding the Fourth Proportional to 2,479.57, 3,413.22 and 2,143.32

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Solution

The fourth proportional to 2,479.57, 3,413.22 and 2,143.32 is: 2,950.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.57 : 3,413.22 = 2,143.32 : x
  2. Step 2: Convert to fraction form
    2,479.57/3,413.22 = 2,143.32/x
  3. Step 3: Cross multiply
    2,479.57x = 3,413.22 × 2,143.32
  4. Step 4: Simplify right side
    2,479.57x = 7,315,622.69
  5. Step 5: Solve for x
    x = 7,315,622.69/2,479.57
  6. Step 6: Final answer
    x = 2,950.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.