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Finding the Fourth Proportional to 13,472.60, 20,206.17 and 3,609.58

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Solution

The fourth proportional to 13,472.60, 20,206.17 and 3,609.58 is: 5,413.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.60 : 20,206.17 = 3,609.58 : x
  2. Step 2: Convert to fraction form
    13,472.60/20,206.17 = 3,609.58/x
  3. Step 3: Cross multiply
    13,472.60x = 20,206.17 × 3,609.58
  4. Step 4: Simplify right side
    13,472.60x = 72,935,694.31
  5. Step 5: Solve for x
    x = 72,935,694.31/13,472.60
  6. Step 6: Final answer
    x = 5,413.63

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1.5x scale

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.