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Finding the Fourth Proportional to 18,305.28, 27,406.02 and 12,046.46

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Solution

The fourth proportional to 18,305.28, 27,406.02 and 12,046.46 is: 18,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.28 : 27,406.02 = 12,046.46 : x
  2. Step 2: Convert to fraction form
    18,305.28/27,406.02 = 12,046.46/x
  3. Step 3: Cross multiply
    18,305.28x = 27,406.02 × 12,046.46
  4. Step 4: Simplify right side
    18,305.28x = 330,145,523.69
  5. Step 5: Solve for x
    x = 330,145,523.69/18,305.28
  6. Step 6: Final answer
    x = 18,035.54

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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.