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Finding the Fourth Proportional to 13,467.25, 20,184 and 7,211.76

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Solution

The fourth proportional to 13,467.25, 20,184 and 7,211.76 is: 10,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,467.25 : 20,184 = 7,211.76 : x
  2. Step 2: Convert to fraction form
    13,467.25/20,184 = 7,211.76/x
  3. Step 3: Cross multiply
    13,467.25x = 20,184 × 7,211.76
  4. Step 4: Simplify right side
    13,467.25x = 145,562,163.84
  5. Step 5: Solve for x
    x = 145,562,163.84/13,467.25
  6. Step 6: Final answer
    x = 10,808.60

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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.