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Finding the Fourth Proportional to 19,956.54, 29,933.72 and 6,105.54

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Solution

The fourth proportional to 19,956.54, 29,933.72 and 6,105.54 is: 9,157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.54 : 29,933.72 = 6,105.54 : x
  2. Step 2: Convert to fraction form
    19,956.54/29,933.72 = 6,105.54/x
  3. Step 3: Cross multiply
    19,956.54x = 29,933.72 × 6,105.54
  4. Step 4: Simplify right side
    19,956.54x = 182,761,524.81
  5. Step 5: Solve for x
    x = 182,761,524.81/19,956.54
  6. Step 6: Final answer
    x = 9,157.98

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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.