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Finding the Fourth Proportional to 111,372.16, 166,984.44 and 40,285.44

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Solution

The fourth proportional to 111,372.16, 166,984.44 and 40,285.44 is: 60,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,372.16 : 166,984.44 = 40,285.44 : x
  2. Step 2: Convert to fraction form
    111,372.16/166,984.44 = 40,285.44/x
  3. Step 3: Cross multiply
    111,372.16x = 166,984.44 × 40,285.44
  4. Step 4: Simplify right side
    111,372.16x = 6,727,041,638.55
  5. Step 5: Solve for x
    x = 6,727,041,638.55/111,372.16
  6. Step 6: Final answer
    x = 60,401.47

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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.