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Finding the Fourth Proportional to 18,672.83, 25,766.66 and 11,015.94

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Solution

The fourth proportional to 18,672.83, 25,766.66 and 11,015.94 is: 15,200.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.83 : 25,766.66 = 11,015.94 : x
  2. Step 2: Convert to fraction form
    18,672.83/25,766.66 = 11,015.94/x
  3. Step 3: Cross multiply
    18,672.83x = 25,766.66 × 11,015.94
  4. Step 4: Simplify right side
    18,672.83x = 283,844,025.43
  5. Step 5: Solve for x
    x = 283,844,025.43/18,672.83
  6. Step 6: Final answer
    x = 15,200.91

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Why These Related Problems?

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