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Finding the Fourth Proportional to 9,993.63, 13,791.15 and 5,517.66

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Solution

The fourth proportional to 9,993.63, 13,791.15 and 5,517.66 is: 7,614.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.63 : 13,791.15 = 5,517.66 : x
  2. Step 2: Convert to fraction form
    9,993.63/13,791.15 = 5,517.66/x
  3. Step 3: Cross multiply
    9,993.63x = 13,791.15 × 5,517.66
  4. Step 4: Simplify right side
    9,993.63x = 76,094,876.71
  5. Step 5: Solve for x
    x = 76,094,876.71/9,993.63
  6. Step 6: Final answer
    x = 7,614.34

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1.5x scale

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.