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Finding the Fourth Proportional to 18,359.91, 25,336.74 and 9,976.41

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Solution

The fourth proportional to 18,359.91, 25,336.74 and 9,976.41 is: 13,767.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.91 : 25,336.74 = 9,976.41 : x
  2. Step 2: Convert to fraction form
    18,359.91/25,336.74 = 9,976.41/x
  3. Step 3: Cross multiply
    18,359.91x = 25,336.74 × 9,976.41
  4. Step 4: Simplify right side
    18,359.91x = 252,769,706.30
  5. Step 5: Solve for x
    x = 252,769,706.30/18,359.91
  6. Step 6: Final answer
    x = 13,767.48

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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.