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Finding the Fourth Proportional to 13,764.80, 20,652.60 and 5,000.60

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Solution

The fourth proportional to 13,764.80, 20,652.60 and 5,000.60 is: 7,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.80 : 20,652.60 = 5,000.60 : x
  2. Step 2: Convert to fraction form
    13,764.80/20,652.60 = 5,000.60/x
  3. Step 3: Cross multiply
    13,764.80x = 20,652.60 × 5,000.60
  4. Step 4: Simplify right side
    13,764.80x = 103,275,391.56
  5. Step 5: Solve for x
    x = 103,275,391.56/13,764.80
  6. Step 6: Final answer
    x = 7,502.86

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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.