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Finding the Fourth Proportional to 19,364.92, 28,974.02 and 11,471.67

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Solution

The fourth proportional to 19,364.92, 28,974.02 and 11,471.67 is: 17,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.92 : 28,974.02 = 11,471.67 : x
  2. Step 2: Convert to fraction form
    19,364.92/28,974.02 = 11,471.67/x
  3. Step 3: Cross multiply
    19,364.92x = 28,974.02 × 11,471.67
  4. Step 4: Simplify right side
    19,364.92x = 332,380,338.66
  5. Step 5: Solve for x
    x = 332,380,338.66/19,364.92
  6. Step 6: Final answer
    x = 17,164.05

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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.