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Finding the Fourth Proportional to 56,908.82, 85,406.79 and 25,765.94

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Solution

The fourth proportional to 56,908.82, 85,406.79 and 25,765.94 is: 38,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.82 : 85,406.79 = 25,765.94 : x
  2. Step 2: Convert to fraction form
    56,908.82/85,406.79 = 25,765.94/x
  3. Step 3: Cross multiply
    56,908.82x = 85,406.79 × 25,765.94
  4. Step 4: Simplify right side
    56,908.82x = 2,200,586,226.73
  5. Step 5: Solve for x
    x = 2,200,586,226.73/56,908.82
  6. Step 6: Final answer
    x = 38,668.63

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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.