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Finding the Fourth Proportional to 111,068.55, 166,602.72 and 36,188.61

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Solution

The fourth proportional to 111,068.55, 166,602.72 and 36,188.61 is: 54,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,068.55 : 166,602.72 = 36,188.61 : x
  2. Step 2: Convert to fraction form
    111,068.55/166,602.72 = 36,188.61/x
  3. Step 3: Cross multiply
    111,068.55x = 166,602.72 × 36,188.61
  4. Step 4: Simplify right side
    111,068.55x = 6,029,120,859.02
  5. Step 5: Solve for x
    x = 6,029,120,859.02/111,068.55
  6. Step 6: Final answer
    x = 54,282.88

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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.