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Finding the Fourth Proportional to 17,474.08, 23,978.60 and 15,890.08

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Solution

The fourth proportional to 17,474.08, 23,978.60 and 15,890.08 is: 21,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,474.08 : 23,978.60 = 15,890.08 : x
  2. Step 2: Convert to fraction form
    17,474.08/23,978.60 = 15,890.08/x
  3. Step 3: Cross multiply
    17,474.08x = 23,978.60 × 15,890.08
  4. Step 4: Simplify right side
    17,474.08x = 381,021,872.29
  5. Step 5: Solve for x
    x = 381,021,872.29/17,474.08
  6. Step 6: Final answer
    x = 21,804.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.