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Finding the Fourth Proportional to 18,254.25, 25,194.90 and 11,869.74

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Solution

The fourth proportional to 18,254.25, 25,194.90 and 11,869.74 is: 16,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.25 : 25,194.90 = 11,869.74 : x
  2. Step 2: Convert to fraction form
    18,254.25/25,194.90 = 11,869.74/x
  3. Step 3: Cross multiply
    18,254.25x = 25,194.90 × 11,869.74
  4. Step 4: Simplify right side
    18,254.25x = 299,056,912.33
  5. Step 5: Solve for x
    x = 299,056,912.33/18,254.25
  6. Step 6: Final answer
    x = 16,382.86

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1.5x scale

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.