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Finding the Fourth Proportional to 104,757.76, 156,704.64 and 67,260.16

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Solution

The fourth proportional to 104,757.76, 156,704.64 and 67,260.16 is: 100,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,757.76 : 156,704.64 = 67,260.16 : x
  2. Step 2: Convert to fraction form
    104,757.76/156,704.64 = 67,260.16/x
  3. Step 3: Cross multiply
    104,757.76x = 156,704.64 × 67,260.16
  4. Step 4: Simplify right side
    104,757.76x = 10,539,979,159.14
  5. Step 5: Solve for x
    x = 10,539,979,159.14/104,757.76
  6. Step 6: Final answer
    x = 100,612.87

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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.