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Finding the Fourth Proportional to 5,869.60, 8,099.80 and 3,216.97

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Solution

The fourth proportional to 5,869.60, 8,099.80 and 3,216.97 is: 4,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,869.60 : 8,099.80 = 3,216.97 : x
  2. Step 2: Convert to fraction form
    5,869.60/8,099.80 = 3,216.97/x
  3. Step 3: Cross multiply
    5,869.60x = 8,099.80 × 3,216.97
  4. Step 4: Simplify right side
    5,869.60x = 26,056,813.61
  5. Step 5: Solve for x
    x = 26,056,813.61/5,869.60
  6. Step 6: Final answer
    x = 4,439.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.