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Finding the Fourth Proportional to 12,768.93, 17,511.17 and 12,236.73

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Solution

The fourth proportional to 12,768.93, 17,511.17 and 12,236.73 is: 16,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.93 : 17,511.17 = 12,236.73 : x
  2. Step 2: Convert to fraction form
    12,768.93/17,511.17 = 12,236.73/x
  3. Step 3: Cross multiply
    12,768.93x = 17,511.17 × 12,236.73
  4. Step 4: Simplify right side
    12,768.93x = 214,279,398.09
  5. Step 5: Solve for x
    x = 214,279,398.09/12,768.93
  6. Step 6: Final answer
    x = 16,781.31

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Half scale
Find fourth proportional to 25,537.86, 35,022.33 and 24,473.46
Double scale
Find fourth proportional to 12,769.93, 17,512.54 and 12,237.73
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.