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Finding the Fourth Proportional to 18,359.94, 25,336.78 and 9,976.44

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Solution

The fourth proportional to 18,359.94, 25,336.78 and 9,976.44 is: 13,767.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.94 : 25,336.78 = 9,976.44 : x
  2. Step 2: Convert to fraction form
    18,359.94/25,336.78 = 9,976.44/x
  3. Step 3: Cross multiply
    18,359.94x = 25,336.78 × 9,976.44
  4. Step 4: Simplify right side
    18,359.94x = 252,770,865.46
  5. Step 5: Solve for x
    x = 252,770,865.46/18,359.94
  6. Step 6: Final answer
    x = 13,767.52

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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.