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Finding the Fourth Proportional to 9,611.20, 14,413.20 and 6,680.80

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Solution

The fourth proportional to 9,611.20, 14,413.20 and 6,680.80 is: 10,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.20 : 14,413.20 = 6,680.80 : x
  2. Step 2: Convert to fraction form
    9,611.20/14,413.20 = 6,680.80/x
  3. Step 3: Cross multiply
    9,611.20x = 14,413.20 × 6,680.80
  4. Step 4: Simplify right side
    9,611.20x = 96,291,706.56
  5. Step 5: Solve for x
    x = 96,291,706.56/9,611.20
  6. Step 6: Final answer
    x = 10,018.70

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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.