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Finding the Fourth Proportional to 18,276.62, 25,220.22 and 10,722.16

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Solution

The fourth proportional to 18,276.62, 25,220.22 and 10,722.16 is: 14,795.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.62 : 25,220.22 = 10,722.16 : x
  2. Step 2: Convert to fraction form
    18,276.62/25,220.22 = 10,722.16/x
  3. Step 3: Cross multiply
    18,276.62x = 25,220.22 × 10,722.16
  4. Step 4: Simplify right side
    18,276.62x = 270,415,234.08
  5. Step 5: Solve for x
    x = 270,415,234.08/18,276.62
  6. Step 6: Final answer
    x = 14,795.69

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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.