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Finding the Fourth Proportional to 321,912.62, 483,342.94 and 180,035.87

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Solution

The fourth proportional to 321,912.62, 483,342.94 and 180,035.87 is: 270,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,912.62 : 483,342.94 = 180,035.87 : x
  2. Step 2: Convert to fraction form
    321,912.62/483,342.94 = 180,035.87/x
  3. Step 3: Cross multiply
    321,912.62x = 483,342.94 × 180,035.87
  4. Step 4: Simplify right side
    321,912.62x = 87,019,066,711.26
  5. Step 5: Solve for x
    x = 87,019,066,711.26/321,912.62
  6. Step 6: Final answer
    x = 270,318.90

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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.