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Finding the Fourth Proportional to 13,858.08, 20,769.60 and 6,057.60

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Solution

The fourth proportional to 13,858.08, 20,769.60 and 6,057.60 is: 9,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.08 : 20,769.60 = 6,057.60 : x
  2. Step 2: Convert to fraction form
    13,858.08/20,769.60 = 6,057.60/x
  3. Step 3: Cross multiply
    13,858.08x = 20,769.60 × 6,057.60
  4. Step 4: Simplify right side
    13,858.08x = 125,813,928.96
  5. Step 5: Solve for x
    x = 125,813,928.96/13,858.08
  6. Step 6: Final answer
    x = 9,078.74

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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.