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Finding the Fourth Proportional to 7,993.88, 11,015.97 and 5,751.80

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Solution

The fourth proportional to 7,993.88, 11,015.97 and 5,751.80 is: 7,926.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.88 : 11,015.97 = 5,751.80 : x
  2. Step 2: Convert to fraction form
    7,993.88/11,015.97 = 5,751.80/x
  3. Step 3: Cross multiply
    7,993.88x = 11,015.97 × 5,751.80
  4. Step 4: Simplify right side
    7,993.88x = 63,361,656.25
  5. Step 5: Solve for x
    x = 63,361,656.25/7,993.88
  6. Step 6: Final answer
    x = 7,926.27

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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.