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Finding the Fourth Proportional to 71,086.80, 106,630.20 and 36,094.80

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Solution

The fourth proportional to 71,086.80, 106,630.20 and 36,094.80 is: 54,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,086.80 : 106,630.20 = 36,094.80 : x
  2. Step 2: Convert to fraction form
    71,086.80/106,630.20 = 36,094.80/x
  3. Step 3: Cross multiply
    71,086.80x = 106,630.20 × 36,094.80
  4. Step 4: Simplify right side
    71,086.80x = 3,848,795,742.96
  5. Step 5: Solve for x
    x = 3,848,795,742.96/71,086.80
  6. Step 6: Final answer
    x = 54,142.20

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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.