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Finding the Fourth Proportional to 12,057.77, 16,639.16 and 6,680.66

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Solution

The fourth proportional to 12,057.77, 16,639.16 and 6,680.66 is: 9,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,057.77 : 16,639.16 = 6,680.66 : x
  2. Step 2: Convert to fraction form
    12,057.77/16,639.16 = 6,680.66/x
  3. Step 3: Cross multiply
    12,057.77x = 16,639.16 × 6,680.66
  4. Step 4: Simplify right side
    12,057.77x = 111,160,454.05
  5. Step 5: Solve for x
    x = 111,160,454.05/12,057.77
  6. Step 6: Final answer
    x = 9,218.99

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