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Finding the Fourth Proportional to 12,373.92, 18,568.08 and 4,979.04

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Solution

The fourth proportional to 12,373.92, 18,568.08 and 4,979.04 is: 7,471.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,373.92 : 18,568.08 = 4,979.04 : x
  2. Step 2: Convert to fraction form
    12,373.92/18,568.08 = 4,979.04/x
  3. Step 3: Cross multiply
    12,373.92x = 18,568.08 × 4,979.04
  4. Step 4: Simplify right side
    12,373.92x = 92,451,213.04
  5. Step 5: Solve for x
    x = 92,451,213.04/12,373.92
  6. Step 6: Final answer
    x = 7,471.46

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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.