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Finding the Fourth Proportional to 80,791.12, 111,491.94 and 44,979.40

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Solution

The fourth proportional to 80,791.12, 111,491.94 and 44,979.40 is: 62,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,791.12 : 111,491.94 = 44,979.40 : x
  2. Step 2: Convert to fraction form
    80,791.12/111,491.94 = 44,979.40/x
  3. Step 3: Cross multiply
    80,791.12x = 111,491.94 × 44,979.40
  4. Step 4: Simplify right side
    80,791.12x = 5,014,840,566.04
  5. Step 5: Solve for x
    x = 5,014,840,566.04/80,791.12
  6. Step 6: Final answer
    x = 62,071.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.