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Finding the Fourth Proportional to 104,576.31, 156,776.31 and 45,367.34

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Solution

The fourth proportional to 104,576.31, 156,776.31 and 45,367.34 is: 68,012.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,576.31 : 156,776.31 = 45,367.34 : x
  2. Step 2: Convert to fraction form
    104,576.31/156,776.31 = 45,367.34/x
  3. Step 3: Cross multiply
    104,576.31x = 156,776.31 × 45,367.34
  4. Step 4: Simplify right side
    104,576.31x = 7,112,523,375.83
  5. Step 5: Solve for x
    x = 7,112,523,375.83/104,576.31
  6. Step 6: Final answer
    x = 68,012.76

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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.