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Finding the Fourth Proportional to 79,438.80, 119,244.60 and 44,446.80

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Solution

The fourth proportional to 79,438.80, 119,244.60 and 44,446.80 is: 66,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438.80 : 119,244.60 = 44,446.80 : x
  2. Step 2: Convert to fraction form
    79,438.80/119,244.60 = 44,446.80/x
  3. Step 3: Cross multiply
    79,438.80x = 119,244.60 × 44,446.80
  4. Step 4: Simplify right side
    79,438.80x = 5,300,040,887.28
  5. Step 5: Solve for x
    x = 5,300,040,887.28/79,438.80
  6. Step 6: Final answer
    x = 66,718.54

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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.