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Finding the Fourth Proportional to 19,956.97, 29,919.22 and 7,470.00

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Solution

The fourth proportional to 19,956.97, 29,919.22 and 7,470.00 is: 11,198.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.97 : 29,919.22 = 7,470.00 : x
  2. Step 2: Convert to fraction form
    19,956.97/29,919.22 = 7,470.00/x
  3. Step 3: Cross multiply
    19,956.97x = 29,919.22 × 7,470.00
  4. Step 4: Simplify right side
    19,956.97x = 223,496,517.28
  5. Step 5: Solve for x
    x = 223,496,517.28/19,956.97
  6. Step 6: Final answer
    x = 11,198.92

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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.