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Finding the Fourth Proportional to 18,264.40, 27,396.60 and 4,413.40

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Solution

The fourth proportional to 18,264.40, 27,396.60 and 4,413.40 is: 6,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.40 : 27,396.60 = 4,413.40 : x
  2. Step 2: Convert to fraction form
    18,264.40/27,396.60 = 4,413.40/x
  3. Step 3: Cross multiply
    18,264.40x = 27,396.60 × 4,413.40
  4. Step 4: Simplify right side
    18,264.40x = 120,912,154.44
  5. Step 5: Solve for x
    x = 120,912,154.44/18,264.40
  6. Step 6: Final answer
    x = 6,620.10

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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.