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Finding the Fourth Proportional to 67,129.60, 100,772.20 and 36,025.60

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Solution

The fourth proportional to 67,129.60, 100,772.20 and 36,025.60 is: 54,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,129.60 : 100,772.20 = 36,025.60 : x
  2. Step 2: Convert to fraction form
    67,129.60/100,772.20 = 36,025.60/x
  3. Step 3: Cross multiply
    67,129.60x = 100,772.20 × 36,025.60
  4. Step 4: Simplify right side
    67,129.60x = 3,630,378,968.32
  5. Step 5: Solve for x
    x = 3,630,378,968.32/67,129.60
  6. Step 6: Final answer
    x = 54,080.15

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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.