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Finding the Fourth Proportional to 19,999.21, 27,600.57 and 11,504.11

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Solution

The fourth proportional to 19,999.21, 27,600.57 and 11,504.11 is: 15,876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.21 : 27,600.57 = 11,504.11 : x
  2. Step 2: Convert to fraction form
    19,999.21/27,600.57 = 11,504.11/x
  3. Step 3: Cross multiply
    19,999.21x = 27,600.57 × 11,504.11
  4. Step 4: Simplify right side
    19,999.21x = 317,519,993.34
  5. Step 5: Solve for x
    x = 317,519,993.34/19,999.21
  6. Step 6: Final answer
    x = 15,876.63

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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.