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Finding the Fourth Proportional to 22,486.94, 33,722.49 and 7,489.99

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Solution

The fourth proportional to 22,486.94, 33,722.49 and 7,489.99 is: 11,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,486.94 : 33,722.49 = 7,489.99 : x
  2. Step 2: Convert to fraction form
    22,486.94/33,722.49 = 7,489.99/x
  3. Step 3: Cross multiply
    22,486.94x = 33,722.49 × 7,489.99
  4. Step 4: Simplify right side
    22,486.94x = 252,581,112.88
  5. Step 5: Solve for x
    x = 252,581,112.88/22,486.94
  6. Step 6: Final answer
    x = 11,232.35

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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.