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Finding the Fourth Proportional to 111,721.73, 167,488.43 and 48,494.21

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Solution

The fourth proportional to 111,721.73, 167,488.43 and 48,494.21 is: 72,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,721.73 : 167,488.43 = 48,494.21 : x
  2. Step 2: Convert to fraction form
    111,721.73/167,488.43 = 48,494.21/x
  3. Step 3: Cross multiply
    111,721.73x = 167,488.43 × 48,494.21
  4. Step 4: Simplify right side
    111,721.73x = 8,122,218,017.08
  5. Step 5: Solve for x
    x = 8,122,218,017.08/111,721.73
  6. Step 6: Final answer
    x = 72,700.44

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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.