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Finding the Fourth Proportional to 73,351.92, 109,885.12 and 54,082.58

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Solution

The fourth proportional to 73,351.92, 109,885.12 and 54,082.58 is: 81,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,351.92 : 109,885.12 = 54,082.58 : x
  2. Step 2: Convert to fraction form
    73,351.92/109,885.12 = 54,082.58/x
  3. Step 3: Cross multiply
    73,351.92x = 109,885.12 × 54,082.58
  4. Step 4: Simplify right side
    73,351.92x = 5,942,869,973.37
  5. Step 5: Solve for x
    x = 5,942,869,973.37/73,351.92
  6. Step 6: Final answer
    x = 81,018.60

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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.