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Finding the Fourth Proportional to 11,841.60, 17,768.80 and 5,268.80

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Solution

The fourth proportional to 11,841.60, 17,768.80 and 5,268.80 is: 7,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,841.60 : 17,768.80 = 5,268.80 : x
  2. Step 2: Convert to fraction form
    11,841.60/17,768.80 = 5,268.80/x
  3. Step 3: Cross multiply
    11,841.60x = 17,768.80 × 5,268.80
  4. Step 4: Simplify right side
    11,841.60x = 93,620,253.44
  5. Step 5: Solve for x
    x = 93,620,253.44/11,841.60
  6. Step 6: Final answer
    x = 7,906.05

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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.