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Finding the Fourth Proportional to 7,226.40, 10,847.70 and 5,590.20

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Solution

The fourth proportional to 7,226.40, 10,847.70 and 5,590.20 is: 8,391.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,226.40 : 10,847.70 = 5,590.20 : x
  2. Step 2: Convert to fraction form
    7,226.40/10,847.70 = 5,590.20/x
  3. Step 3: Cross multiply
    7,226.40x = 10,847.70 × 5,590.20
  4. Step 4: Simplify right side
    7,226.40x = 60,640,812.54
  5. Step 5: Solve for x
    x = 60,640,812.54/7,226.40
  6. Step 6: Final answer
    x = 8,391.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.