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Finding the Fourth Proportional to 111,085.64, 166,645.81 and 36,188.39

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Solution

The fourth proportional to 111,085.64, 166,645.81 and 36,188.39 is: 54,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,085.64 : 166,645.81 = 36,188.39 : x
  2. Step 2: Convert to fraction form
    111,085.64/166,645.81 = 36,188.39/x
  3. Step 3: Cross multiply
    111,085.64x = 166,645.81 × 36,188.39
  4. Step 4: Simplify right side
    111,085.64x = 6,030,642,885.05
  5. Step 5: Solve for x
    x = 6,030,642,885.05/111,085.64
  6. Step 6: Final answer
    x = 54,288.23

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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.