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Finding the Fourth Proportional to 19,850.07, 27,391.09 and 11,892.09

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Solution

The fourth proportional to 19,850.07, 27,391.09 and 11,892.09 is: 16,409.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,850.07 : 27,391.09 = 11,892.09 : x
  2. Step 2: Convert to fraction form
    19,850.07/27,391.09 = 11,892.09/x
  3. Step 3: Cross multiply
    19,850.07x = 27,391.09 × 11,892.09
  4. Step 4: Simplify right side
    19,850.07x = 325,737,307.48
  5. Step 5: Solve for x
    x = 325,737,307.48/19,850.07
  6. Step 6: Final answer
    x = 16,409.88

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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.