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Finding the Fourth Proportional to 22,991.27, 34,477.79 and 7,993.91

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Solution

The fourth proportional to 22,991.27, 34,477.79 and 7,993.91 is: 11,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,991.27 : 34,477.79 = 7,993.91 : x
  2. Step 2: Convert to fraction form
    22,991.27/34,477.79 = 7,993.91/x
  3. Step 3: Cross multiply
    22,991.27x = 34,477.79 × 7,993.91
  4. Step 4: Simplify right side
    22,991.27x = 275,612,396.48
  5. Step 5: Solve for x
    x = 275,612,396.48/22,991.27
  6. Step 6: Final answer
    x = 11,987.70

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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.