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Finding the Fourth Proportional to 67,227.54, 100,828.35 and 20,474.34

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Solution

The fourth proportional to 67,227.54, 100,828.35 and 20,474.34 is: 30,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,227.54 : 100,828.35 = 20,474.34 : x
  2. Step 2: Convert to fraction form
    67,227.54/100,828.35 = 20,474.34/x
  3. Step 3: Cross multiply
    67,227.54x = 100,828.35 × 20,474.34
  4. Step 4: Simplify right side
    67,227.54x = 2,064,393,919.54
  5. Step 5: Solve for x
    x = 2,064,393,919.54/67,227.54
  6. Step 6: Final answer
    x = 30,707.56

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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.