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Finding the Fourth Proportional to 32,568.80, 48,843.60 and 12,840.80

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Solution

The fourth proportional to 32,568.80, 48,843.60 and 12,840.80 is: 19,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,568.80 : 48,843.60 = 12,840.80 : x
  2. Step 2: Convert to fraction form
    32,568.80/48,843.60 = 12,840.80/x
  3. Step 3: Cross multiply
    32,568.80x = 48,843.60 × 12,840.80
  4. Step 4: Simplify right side
    32,568.80x = 627,190,898.88
  5. Step 5: Solve for x
    x = 627,190,898.88/32,568.80
  6. Step 6: Final answer
    x = 19,257.42

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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.