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Finding the Fourth Proportional to 7,791.45, 11,688.73 and 2,792.48

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Solution

The fourth proportional to 7,791.45, 11,688.73 and 2,792.48 is: 4,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.45 : 11,688.73 = 2,792.48 : x
  2. Step 2: Convert to fraction form
    7,791.45/11,688.73 = 2,792.48/x
  3. Step 3: Cross multiply
    7,791.45x = 11,688.73 × 2,792.48
  4. Step 4: Simplify right side
    7,791.45x = 32,640,566.99
  5. Step 5: Solve for x
    x = 32,640,566.99/7,791.45
  6. Step 6: Final answer
    x = 4,189.28

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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.