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Finding the Fourth Proportional to 12,777.92, 19,166.88 and 3,893.32

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Solution

The fourth proportional to 12,777.92, 19,166.88 and 3,893.32 is: 5,839.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.92 : 19,166.88 = 3,893.32 : x
  2. Step 2: Convert to fraction form
    12,777.92/19,166.88 = 3,893.32/x
  3. Step 3: Cross multiply
    12,777.92x = 19,166.88 × 3,893.32
  4. Step 4: Simplify right side
    12,777.92x = 74,622,797.24
  5. Step 5: Solve for x
    x = 74,622,797.24/12,777.92
  6. Step 6: Final answer
    x = 5,839.98

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Similar ratio
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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.