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Finding the Fourth Proportional to 13,599.69, 20,408.22 and 5,808.48

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Solution

The fourth proportional to 13,599.69, 20,408.22 and 5,808.48 is: 8,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.69 : 20,408.22 = 5,808.48 : x
  2. Step 2: Convert to fraction form
    13,599.69/20,408.22 = 5,808.48/x
  3. Step 3: Cross multiply
    13,599.69x = 20,408.22 × 5,808.48
  4. Step 4: Simplify right side
    13,599.69x = 118,540,737.71
  5. Step 5: Solve for x
    x = 118,540,737.71/13,599.69
  6. Step 6: Final answer
    x = 8,716.43

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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.