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Finding the Fourth Proportional to 13,672.82, 20,500.48 and 5,773.20

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Solution

The fourth proportional to 13,672.82, 20,500.48 and 5,773.20 is: 8,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.82 : 20,500.48 = 5,773.20 : x
  2. Step 2: Convert to fraction form
    13,672.82/20,500.48 = 5,773.20/x
  3. Step 3: Cross multiply
    13,672.82x = 20,500.48 × 5,773.20
  4. Step 4: Simplify right side
    13,672.82x = 118,353,305.45
  5. Step 5: Solve for x
    x = 118,353,305.45/13,672.82
  6. Step 6: Final answer
    x = 8,656.10

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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.