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Finding the Fourth Proportional to 168,387.56, 252,709.77 and 61,872.46

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Solution

The fourth proportional to 168,387.56, 252,709.77 and 61,872.46 is: 92,855.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,387.56 : 252,709.77 = 61,872.46 : x
  2. Step 2: Convert to fraction form
    168,387.56/252,709.77 = 61,872.46/x
  3. Step 3: Cross multiply
    168,387.56x = 252,709.77 × 61,872.46
  4. Step 4: Simplify right side
    168,387.56x = 15,635,774,736.18
  5. Step 5: Solve for x
    x = 15,635,774,736.18/168,387.56
  6. Step 6: Final answer
    x = 92,855.88

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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.