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Finding the Fourth Proportional to 111,247.56, 166,452.60 and 78,032.52

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Solution

The fourth proportional to 111,247.56, 166,452.60 and 78,032.52 is: 116,755.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,247.56 : 166,452.60 = 78,032.52 : x
  2. Step 2: Convert to fraction form
    111,247.56/166,452.60 = 78,032.52/x
  3. Step 3: Cross multiply
    111,247.56x = 166,452.60 × 78,032.52
  4. Step 4: Simplify right side
    111,247.56x = 12,988,715,838.55
  5. Step 5: Solve for x
    x = 12,988,715,838.55/111,247.56
  6. Step 6: Final answer
    x = 116,755.06

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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.