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Finding the Fourth Proportional to 104,056.64, 156,108 and 57,285.44

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Solution

The fourth proportional to 104,056.64, 156,108 and 57,285.44 is: 85,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,056.64 : 156,108 = 57,285.44 : x
  2. Step 2: Convert to fraction form
    104,056.64/156,108 = 57,285.44/x
  3. Step 3: Cross multiply
    104,056.64x = 156,108 × 57,285.44
  4. Step 4: Simplify right side
    104,056.64x = 8,942,715,467.52
  5. Step 5: Solve for x
    x = 8,942,715,467.52/104,056.64
  6. Step 6: Final answer
    x = 85,940.84

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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.