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Finding the Fourth Proportional to 72,404.70, 108,558.45 and 34,982.70

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Solution

The fourth proportional to 72,404.70, 108,558.45 and 34,982.70 is: 52,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,404.70 : 108,558.45 = 34,982.70 : x
  2. Step 2: Convert to fraction form
    72,404.70/108,558.45 = 34,982.70/x
  3. Step 3: Cross multiply
    72,404.70x = 108,558.45 × 34,982.70
  4. Step 4: Simplify right side
    72,404.70x = 3,797,667,688.82
  5. Step 5: Solve for x
    x = 3,797,667,688.82/72,404.70
  6. Step 6: Final answer
    x = 52,450.57

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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.