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Finding the Fourth Proportional to 13,785.35, 20,674.89 and 3,924.41

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Solution

The fourth proportional to 13,785.35, 20,674.89 and 3,924.41 is: 5,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.35 : 20,674.89 = 3,924.41 : x
  2. Step 2: Convert to fraction form
    13,785.35/20,674.89 = 3,924.41/x
  3. Step 3: Cross multiply
    13,785.35x = 20,674.89 × 3,924.41
  4. Step 4: Simplify right side
    13,785.35x = 81,136,641.69
  5. Step 5: Solve for x
    x = 81,136,641.69/13,785.35
  6. Step 6: Final answer
    x = 5,885.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.