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Finding the Fourth Proportional to 19,892.70, 27,451.66 and 10,940.12

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Solution

The fourth proportional to 19,892.70, 27,451.66 and 10,940.12 is: 15,097.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,892.70 : 27,451.66 = 10,940.12 : x
  2. Step 2: Convert to fraction form
    19,892.70/27,451.66 = 10,940.12/x
  3. Step 3: Cross multiply
    19,892.70x = 27,451.66 × 10,940.12
  4. Step 4: Simplify right side
    19,892.70x = 300,324,454.60
  5. Step 5: Solve for x
    x = 300,324,454.60/19,892.70
  6. Step 6: Final answer
    x = 15,097.22

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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.