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Finding the Fourth Proportional to 11,891.92, 17,840.82 and 3,572.08

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Solution

The fourth proportional to 11,891.92, 17,840.82 and 3,572.08 is: 5,359.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.92 : 17,840.82 = 3,572.08 : x
  2. Step 2: Convert to fraction form
    11,891.92/17,840.82 = 3,572.08/x
  3. Step 3: Cross multiply
    11,891.92x = 17,840.82 × 3,572.08
  4. Step 4: Simplify right side
    11,891.92x = 63,728,836.31
  5. Step 5: Solve for x
    x = 63,728,836.31/11,891.92
  6. Step 6: Final answer
    x = 5,359.00

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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.