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Finding the Fourth Proportional to 19,793.54, 29,736.76 and 18,672.68

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Solution

The fourth proportional to 19,793.54, 29,736.76 and 18,672.68 is: 28,052.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.54 : 29,736.76 = 18,672.68 : x
  2. Step 2: Convert to fraction form
    19,793.54/29,736.76 = 18,672.68/x
  3. Step 3: Cross multiply
    19,793.54x = 29,736.76 × 18,672.68
  4. Step 4: Simplify right side
    19,793.54x = 555,265,003.72
  5. Step 5: Solve for x
    x = 555,265,003.72/19,793.54
  6. Step 6: Final answer
    x = 28,052.84

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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.