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Finding the Fourth Proportional to 25,956.92, 38,944.43 and 8,190.33

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Solution

The fourth proportional to 25,956.92, 38,944.43 and 8,190.33 is: 12,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,956.92 : 38,944.43 = 8,190.33 : x
  2. Step 2: Convert to fraction form
    25,956.92/38,944.43 = 8,190.33/x
  3. Step 3: Cross multiply
    25,956.92x = 38,944.43 × 8,190.33
  4. Step 4: Simplify right side
    25,956.92x = 318,967,577.08
  5. Step 5: Solve for x
    x = 318,967,577.08/25,956.92
  6. Step 6: Final answer
    x = 12,288.34

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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.