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Finding the Fourth Proportional to 67,311.52, 100,837.76 and 37,639.36

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Solution

The fourth proportional to 67,311.52, 100,837.76 and 37,639.36 is: 56,386.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,311.52 : 100,837.76 = 37,639.36 : x
  2. Step 2: Convert to fraction form
    67,311.52/100,837.76 = 37,639.36/x
  3. Step 3: Cross multiply
    67,311.52x = 100,837.76 × 37,639.36
  4. Step 4: Simplify right side
    67,311.52x = 3,795,468,750.23
  5. Step 5: Solve for x
    x = 3,795,468,750.23/67,311.52
  6. Step 6: Final answer
    x = 56,386.61

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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.