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Finding the Fourth Proportional to 73,211.34, 109,640.69 and 35,679.69

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Solution

The fourth proportional to 73,211.34, 109,640.69 and 35,679.69 is: 53,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,211.34 : 109,640.69 = 35,679.69 : x
  2. Step 2: Convert to fraction form
    73,211.34/109,640.69 = 35,679.69/x
  3. Step 3: Cross multiply
    73,211.34x = 109,640.69 × 35,679.69
  4. Step 4: Simplify right side
    73,211.34x = 3,911,945,785.99
  5. Step 5: Solve for x
    x = 3,911,945,785.99/73,211.34
  6. Step 6: Final answer
    x = 53,433.60

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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.