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Finding the Fourth Proportional to 33,300.99, 49,949.85 and 12,239.42

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Solution

The fourth proportional to 33,300.99, 49,949.85 and 12,239.42 is: 18,358.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,300.99 : 49,949.85 = 12,239.42 : x
  2. Step 2: Convert to fraction form
    33,300.99/49,949.85 = 12,239.42/x
  3. Step 3: Cross multiply
    33,300.99x = 49,949.85 × 12,239.42
  4. Step 4: Simplify right side
    33,300.99x = 611,357,201.36
  5. Step 5: Solve for x
    x = 611,357,201.36/33,300.99
  6. Step 6: Final answer
    x = 18,358.53

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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.