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Finding the Fourth Proportional to 7,896.13, 11,840.06 and 3,943.15

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Solution

The fourth proportional to 7,896.13, 11,840.06 and 3,943.15 is: 5,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.13 : 11,840.06 = 3,943.15 : x
  2. Step 2: Convert to fraction form
    7,896.13/11,840.06 = 3,943.15/x
  3. Step 3: Cross multiply
    7,896.13x = 11,840.06 × 3,943.15
  4. Step 4: Simplify right side
    7,896.13x = 46,687,112.87
  5. Step 5: Solve for x
    x = 46,687,112.87/7,896.13
  6. Step 6: Final answer
    x = 5,912.66

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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.