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Finding the Fourth Proportional to 204,082.76, 306,129.90 and 56,338.76

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Solution

The fourth proportional to 204,082.76, 306,129.90 and 56,338.76 is: 84,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,082.76 : 306,129.90 = 56,338.76 : x
  2. Step 2: Convert to fraction form
    204,082.76/306,129.90 = 56,338.76/x
  3. Step 3: Cross multiply
    204,082.76x = 306,129.90 × 56,338.76
  4. Step 4: Simplify right side
    204,082.76x = 17,246,978,964.92
  5. Step 5: Solve for x
    x = 17,246,978,964.92/204,082.76
  6. Step 6: Final answer
    x = 84,509.73

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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.