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Finding the Fourth Proportional to 7,991.01, 11,027.81 and 4,454.46

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Solution

The fourth proportional to 7,991.01, 11,027.81 and 4,454.46 is: 6,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.01 : 11,027.81 = 4,454.46 : x
  2. Step 2: Convert to fraction form
    7,991.01/11,027.81 = 4,454.46/x
  3. Step 3: Cross multiply
    7,991.01x = 11,027.81 × 4,454.46
  4. Step 4: Simplify right side
    7,991.01x = 49,122,949.67
  5. Step 5: Solve for x
    x = 49,122,949.67/7,991.01
  6. Step 6: Final answer
    x = 6,147.28

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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.