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Finding the Fourth Proportional to 18,235.14, 25,163.19 and 10,278.42

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Solution

The fourth proportional to 18,235.14, 25,163.19 and 10,278.42 is: 14,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.14 : 25,163.19 = 10,278.42 : x
  2. Step 2: Convert to fraction form
    18,235.14/25,163.19 = 10,278.42/x
  3. Step 3: Cross multiply
    18,235.14x = 25,163.19 × 10,278.42
  4. Step 4: Simplify right side
    18,235.14x = 258,637,835.36
  5. Step 5: Solve for x
    x = 258,637,835.36/18,235.14
  6. Step 6: Final answer
    x = 14,183.49

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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.