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Finding the Fourth Proportional to 20,568.60, 30,848.04 and 8,875.44

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Solution

The fourth proportional to 20,568.60, 30,848.04 and 8,875.44 is: 13,311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.60 : 30,848.04 = 8,875.44 : x
  2. Step 2: Convert to fraction form
    20,568.60/30,848.04 = 8,875.44/x
  3. Step 3: Cross multiply
    20,568.60x = 30,848.04 × 8,875.44
  4. Step 4: Simplify right side
    20,568.60x = 273,789,928.14
  5. Step 5: Solve for x
    x = 273,789,928.14/20,568.60
  6. Step 6: Final answer
    x = 13,311.06

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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.