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Finding the Fourth Proportional to 22,017.12, 33,017.22 and 7,972.99

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Solution

The fourth proportional to 22,017.12, 33,017.22 and 7,972.99 is: 11,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,017.12 : 33,017.22 = 7,972.99 : x
  2. Step 2: Convert to fraction form
    22,017.12/33,017.22 = 7,972.99/x
  3. Step 3: Cross multiply
    22,017.12x = 33,017.22 × 7,972.99
  4. Step 4: Simplify right side
    22,017.12x = 263,245,964.89
  5. Step 5: Solve for x
    x = 263,245,964.89/22,017.12
  6. Step 6: Final answer
    x = 11,956.42

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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.