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Finding the Fourth Proportional to 7,200.90, 10,791.23 and 5,722.65

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Solution

The fourth proportional to 7,200.90, 10,791.23 and 5,722.65 is: 8,575.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.90 : 10,791.23 = 5,722.65 : x
  2. Step 2: Convert to fraction form
    7,200.90/10,791.23 = 5,722.65/x
  3. Step 3: Cross multiply
    7,200.90x = 10,791.23 × 5,722.65
  4. Step 4: Simplify right side
    7,200.90x = 61,754,403.75
  5. Step 5: Solve for x
    x = 61,754,403.75/7,200.90
  6. Step 6: Final answer
    x = 8,575.93

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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.