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Finding the Fourth Proportional to 104,211.64, 156,153.54 and 80,576.92

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Solution

The fourth proportional to 104,211.64, 156,153.54 and 80,576.92 is: 120,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,211.64 : 156,153.54 = 80,576.92 : x
  2. Step 2: Convert to fraction form
    104,211.64/156,153.54 = 80,576.92/x
  3. Step 3: Cross multiply
    104,211.64x = 156,153.54 × 80,576.92
  4. Step 4: Simplify right side
    104,211.64x = 12,582,371,300.30
  5. Step 5: Solve for x
    x = 12,582,371,300.30/104,211.64
  6. Step 6: Final answer
    x = 120,738.64

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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.