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Finding the Fourth Proportional to 18,793.28, 25,933.56 and 10,409.78

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Solution

The fourth proportional to 18,793.28, 25,933.56 and 10,409.78 is: 14,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.28 : 25,933.56 = 10,409.78 : x
  2. Step 2: Convert to fraction form
    18,793.28/25,933.56 = 10,409.78/x
  3. Step 3: Cross multiply
    18,793.28x = 25,933.56 × 10,409.78
  4. Step 4: Simplify right side
    18,793.28x = 269,962,654.22
  5. Step 5: Solve for x
    x = 269,962,654.22/18,793.28
  6. Step 6: Final answer
    x = 14,364.85

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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.