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Finding the Fourth Proportional to 18,807.42, 25,944.84 and 14,586.42

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Solution

The fourth proportional to 18,807.42, 25,944.84 and 14,586.42 is: 20,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.42 : 25,944.84 = 14,586.42 : x
  2. Step 2: Convert to fraction form
    18,807.42/25,944.84 = 14,586.42/x
  3. Step 3: Cross multiply
    18,807.42x = 25,944.84 × 14,586.42
  4. Step 4: Simplify right side
    18,807.42x = 378,442,333.07
  5. Step 5: Solve for x
    x = 378,442,333.07/18,807.42
  6. Step 6: Final answer
    x = 20,121.97

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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.