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Finding the Fourth Proportional to 8,791.73, 13,190.93 and 5,677.68

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Solution

The fourth proportional to 8,791.73, 13,190.93 and 5,677.68 is: 8,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.73 : 13,190.93 = 5,677.68 : x
  2. Step 2: Convert to fraction form
    8,791.73/13,190.93 = 5,677.68/x
  3. Step 3: Cross multiply
    8,791.73x = 13,190.93 × 5,677.68
  4. Step 4: Simplify right side
    8,791.73x = 74,893,879.44
  5. Step 5: Solve for x
    x = 74,893,879.44/8,791.73
  6. Step 6: Final answer
    x = 8,518.67

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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.