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Finding the Fourth Proportional to 6,664.52, 9,991.20 and 4,193.22

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Solution

The fourth proportional to 6,664.52, 9,991.20 and 4,193.22 is: 6,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.52 : 9,991.20 = 4,193.22 : x
  2. Step 2: Convert to fraction form
    6,664.52/9,991.20 = 4,193.22/x
  3. Step 3: Cross multiply
    6,664.52x = 9,991.20 × 4,193.22
  4. Step 4: Simplify right side
    6,664.52x = 41,895,299.66
  5. Step 5: Solve for x
    x = 41,895,299.66/6,664.52
  6. Step 6: Final answer
    x = 6,286.32

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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.