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Finding the Fourth Proportional to 8,568.36, 12,856.37 and 5,447.53

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Solution

The fourth proportional to 8,568.36, 12,856.37 and 5,447.53 is: 8,173.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,568.36 : 12,856.37 = 5,447.53 : x
  2. Step 2: Convert to fraction form
    8,568.36/12,856.37 = 5,447.53/x
  3. Step 3: Cross multiply
    8,568.36x = 12,856.37 × 5,447.53
  4. Step 4: Simplify right side
    8,568.36x = 70,035,495.59
  5. Step 5: Solve for x
    x = 70,035,495.59/8,568.36
  6. Step 6: Final answer
    x = 8,173.73

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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.