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Finding the Fourth Proportional to 7,896.15, 10,889.12 and 6,100.77

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Solution

The fourth proportional to 7,896.15, 10,889.12 and 6,100.77 is: 8,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.15 : 10,889.12 = 6,100.77 : x
  2. Step 2: Convert to fraction form
    7,896.15/10,889.12 = 6,100.77/x
  3. Step 3: Cross multiply
    7,896.15x = 10,889.12 × 6,100.77
  4. Step 4: Simplify right side
    7,896.15x = 66,431,986.12
  5. Step 5: Solve for x
    x = 66,431,986.12/7,896.15
  6. Step 6: Final answer
    x = 8,413.21

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1.5x scale

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.