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Finding the Fourth Proportional to 7,413.20, 11,119.80 and 3,033.80

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Solution

The fourth proportional to 7,413.20, 11,119.80 and 3,033.80 is: 4,550.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,413.20 : 11,119.80 = 3,033.80 : x
  2. Step 2: Convert to fraction form
    7,413.20/11,119.80 = 3,033.80/x
  3. Step 3: Cross multiply
    7,413.20x = 11,119.80 × 3,033.80
  4. Step 4: Simplify right side
    7,413.20x = 33,735,249.24
  5. Step 5: Solve for x
    x = 33,735,249.24/7,413.20
  6. Step 6: Final answer
    x = 4,550.70

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1.5x scale

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.