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Finding the Fourth Proportional to 18,134.21, 27,201.20 and 9,866.79

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Solution

The fourth proportional to 18,134.21, 27,201.20 and 9,866.79 is: 14,800.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,134.21 : 27,201.20 = 9,866.79 : x
  2. Step 2: Convert to fraction form
    18,134.21/27,201.20 = 9,866.79/x
  3. Step 3: Cross multiply
    18,134.21x = 27,201.20 × 9,866.79
  4. Step 4: Simplify right side
    18,134.21x = 268,388,478.81
  5. Step 5: Solve for x
    x = 268,388,478.81/18,134.21
  6. Step 6: Final answer
    x = 14,800.12

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Similar ratio
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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.