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Finding the Fourth Proportional to 22,413.20, 33,619.80 and 15,414.80

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Solution

The fourth proportional to 22,413.20, 33,619.80 and 15,414.80 is: 23,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,413.20 : 33,619.80 = 15,414.80 : x
  2. Step 2: Convert to fraction form
    22,413.20/33,619.80 = 15,414.80/x
  3. Step 3: Cross multiply
    22,413.20x = 33,619.80 × 15,414.80
  4. Step 4: Simplify right side
    22,413.20x = 518,242,493.04
  5. Step 5: Solve for x
    x = 518,242,493.04/22,413.20
  6. Step 6: Final answer
    x = 23,122.20

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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.