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Finding the Fourth Proportional to 7,243.08, 9,991.91 and 4,724.04

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Solution

The fourth proportional to 7,243.08, 9,991.91 and 4,724.04 is: 6,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.08 : 9,991.91 = 4,724.04 : x
  2. Step 2: Convert to fraction form
    7,243.08/9,991.91 = 4,724.04/x
  3. Step 3: Cross multiply
    7,243.08x = 9,991.91 × 4,724.04
  4. Step 4: Simplify right side
    7,243.08x = 47,202,158.90
  5. Step 5: Solve for x
    x = 47,202,158.90/7,243.08
  6. Step 6: Final answer
    x = 6,516.86

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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.