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Finding the Fourth Proportional to 104,516.81, 156,801.26 and 30,644.81

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Solution

The fourth proportional to 104,516.81, 156,801.26 and 30,644.81 is: 45,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,516.81 : 156,801.26 = 30,644.81 : x
  2. Step 2: Convert to fraction form
    104,516.81/156,801.26 = 30,644.81/x
  3. Step 3: Cross multiply
    104,516.81x = 156,801.26 × 30,644.81
  4. Step 4: Simplify right side
    104,516.81x = 4,805,145,289.08
  5. Step 5: Solve for x
    x = 4,805,145,289.08/104,516.81
  6. Step 6: Final answer
    x = 45,974.85

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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.