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Finding the Fourth Proportional to 18,687.49, 25,793.57 and 10,734.10

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Solution

The fourth proportional to 18,687.49, 25,793.57 and 10,734.10 is: 14,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.49 : 25,793.57 = 10,734.10 : x
  2. Step 2: Convert to fraction form
    18,687.49/25,793.57 = 10,734.10/x
  3. Step 3: Cross multiply
    18,687.49x = 25,793.57 × 10,734.10
  4. Step 4: Simplify right side
    18,687.49x = 276,870,759.74
  5. Step 5: Solve for x
    x = 276,870,759.74/18,687.49
  6. Step 6: Final answer
    x = 14,815.83

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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.