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Finding the Fourth Proportional to 13,472.66, 20,211.52 and 4,113.52

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Solution

The fourth proportional to 13,472.66, 20,211.52 and 4,113.52 is: 6,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.66 : 20,211.52 = 4,113.52 : x
  2. Step 2: Convert to fraction form
    13,472.66/20,211.52 = 4,113.52/x
  3. Step 3: Cross multiply
    13,472.66x = 20,211.52 × 4,113.52
  4. Step 4: Simplify right side
    13,472.66x = 83,140,491.75
  5. Step 5: Solve for x
    x = 83,140,491.75/13,472.66
  6. Step 6: Final answer
    x = 6,171.05

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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.