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Finding the Fourth Proportional to 111,328.86, 166,989.15 and 48,164.88

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Solution

The fourth proportional to 111,328.86, 166,989.15 and 48,164.88 is: 72,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,328.86 : 166,989.15 = 48,164.88 : x
  2. Step 2: Convert to fraction form
    111,328.86/166,989.15 = 48,164.88/x
  3. Step 3: Cross multiply
    111,328.86x = 166,989.15 × 48,164.88
  4. Step 4: Simplify right side
    111,328.86x = 8,043,012,371.05
  5. Step 5: Solve for x
    x = 8,043,012,371.05/111,328.86
  6. Step 6: Final answer
    x = 72,245.53

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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.