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Finding the Fourth Proportional to 23,992, 33,141.12 and 21,756.32

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Solution

The fourth proportional to 23,992, 33,141.12 and 21,756.32 is: 30,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,992 : 33,141.12 = 21,756.32 : x
  2. Step 2: Convert to fraction form
    23,992/33,141.12 = 21,756.32/x
  3. Step 3: Cross multiply
    23,992x = 33,141.12 × 21,756.32
  4. Step 4: Simplify right side
    23,992x = 721,028,811.88
  5. Step 5: Solve for x
    x = 721,028,811.88/23,992
  6. Step 6: Final answer
    x = 30,052.88

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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.