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Finding the Fourth Proportional to 111,920.30, 167,880.45 and 62,665.90

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Solution

The fourth proportional to 111,920.30, 167,880.45 and 62,665.90 is: 93,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.30 : 167,880.45 = 62,665.90 : x
  2. Step 2: Convert to fraction form
    111,920.30/167,880.45 = 62,665.90/x
  3. Step 3: Cross multiply
    111,920.30x = 167,880.45 × 62,665.90
  4. Step 4: Simplify right side
    111,920.30x = 10,520,379,491.66
  5. Step 5: Solve for x
    x = 10,520,379,491.66/111,920.30
  6. Step 6: Final answer
    x = 93,998.85

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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.