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Finding the Fourth Proportional to 19,956.73, 29,939.78 and 6,809.15

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Solution

The fourth proportional to 19,956.73, 29,939.78 and 6,809.15 is: 10,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.73 : 29,939.78 = 6,809.15 : x
  2. Step 2: Convert to fraction form
    19,956.73/29,939.78 = 6,809.15/x
  3. Step 3: Cross multiply
    19,956.73x = 29,939.78 × 6,809.15
  4. Step 4: Simplify right side
    19,956.73x = 203,864,320.31
  5. Step 5: Solve for x
    x = 203,864,320.31/19,956.73
  6. Step 6: Final answer
    x = 10,215.32

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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.