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Finding the Fourth Proportional to 76,892.91, 115,333.70 and 36,940.47

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Solution

The fourth proportional to 76,892.91, 115,333.70 and 36,940.47 is: 55,407.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,892.91 : 115,333.70 = 36,940.47 : x
  2. Step 2: Convert to fraction form
    76,892.91/115,333.70 = 36,940.47/x
  3. Step 3: Cross multiply
    76,892.91x = 115,333.70 × 36,940.47
  4. Step 4: Simplify right side
    76,892.91x = 4,260,480,900.14
  5. Step 5: Solve for x
    x = 4,260,480,900.14/76,892.91
  6. Step 6: Final answer
    x = 55,407.98

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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.