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Finding the Fourth Proportional to 18,912.65, 26,099.64 and 10,414.94

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Solution

The fourth proportional to 18,912.65, 26,099.64 and 10,414.94 is: 14,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.65 : 26,099.64 = 10,414.94 : x
  2. Step 2: Convert to fraction form
    18,912.65/26,099.64 = 10,414.94/x
  3. Step 3: Cross multiply
    18,912.65x = 26,099.64 × 10,414.94
  4. Step 4: Simplify right side
    18,912.65x = 271,826,054.12
  5. Step 5: Solve for x
    x = 271,826,054.12/18,912.65
  6. Step 6: Final answer
    x = 14,372.71

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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.