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Finding the Fourth Proportional to 79,940.48, 110,318.61 and 44,129.72

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Solution

The fourth proportional to 79,940.48, 110,318.61 and 44,129.72 is: 60,899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,940.48 : 110,318.61 = 44,129.72 : x
  2. Step 2: Convert to fraction form
    79,940.48/110,318.61 = 44,129.72/x
  3. Step 3: Cross multiply
    79,940.48x = 110,318.61 × 44,129.72
  4. Step 4: Simplify right side
    79,940.48x = 4,868,328,818.50
  5. Step 5: Solve for x
    x = 4,868,328,818.50/79,940.48
  6. Step 6: Final answer
    x = 60,899.42

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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.