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Finding the Fourth Proportional to 18,372.79, 25,350.01 and 11,656

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Solution

The fourth proportional to 18,372.79, 25,350.01 and 11,656 is: 16,082.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.79 : 25,350.01 = 11,656 : x
  2. Step 2: Convert to fraction form
    18,372.79/25,350.01 = 11,656/x
  3. Step 3: Cross multiply
    18,372.79x = 25,350.01 × 11,656
  4. Step 4: Simplify right side
    18,372.79x = 295,479,716.56
  5. Step 5: Solve for x
    x = 295,479,716.56/18,372.79
  6. Step 6: Final answer
    x = 16,082.46

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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.