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Finding the Fourth Proportional to 20,606.73, 30,910.06 and 7,456.02

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Solution

The fourth proportional to 20,606.73, 30,910.06 and 7,456.02 is: 11,184.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.73 : 30,910.06 = 7,456.02 : x
  2. Step 2: Convert to fraction form
    20,606.73/30,910.06 = 7,456.02/x
  3. Step 3: Cross multiply
    20,606.73x = 30,910.06 × 7,456.02
  4. Step 4: Simplify right side
    20,606.73x = 230,466,025.56
  5. Step 5: Solve for x
    x = 230,466,025.56/20,606.73
  6. Step 6: Final answer
    x = 11,184.02

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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.