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Finding the Fourth Proportional to 18,469.20, 27,732.60 and 10,693.20

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Solution

The fourth proportional to 18,469.20, 27,732.60 and 10,693.20 is: 16,056.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.20 : 27,732.60 = 10,693.20 : x
  2. Step 2: Convert to fraction form
    18,469.20/27,732.60 = 10,693.20/x
  3. Step 3: Cross multiply
    18,469.20x = 27,732.60 × 10,693.20
  4. Step 4: Simplify right side
    18,469.20x = 296,550,238.32
  5. Step 5: Solve for x
    x = 296,550,238.32/18,469.20
  6. Step 6: Final answer
    x = 16,056.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.