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Finding the Fourth Proportional to 73,808.20, 110,636.70 and 36,310.60

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Solution

The fourth proportional to 73,808.20, 110,636.70 and 36,310.60 is: 54,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,808.20 : 110,636.70 = 36,310.60 : x
  2. Step 2: Convert to fraction form
    73,808.20/110,636.70 = 36,310.60/x
  3. Step 3: Cross multiply
    73,808.20x = 110,636.70 × 36,310.60
  4. Step 4: Simplify right side
    73,808.20x = 4,017,284,959.02
  5. Step 5: Solve for x
    x = 4,017,284,959.02/73,808.20
  6. Step 6: Final answer
    x = 54,428.71

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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.