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Finding the Fourth Proportional to 79,744.70, 119,617.19 and 74,873.16

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Solution

The fourth proportional to 79,744.70, 119,617.19 and 74,873.16 is: 112,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,744.70 : 119,617.19 = 74,873.16 : x
  2. Step 2: Convert to fraction form
    79,744.70/119,617.19 = 74,873.16/x
  3. Step 3: Cross multiply
    79,744.70x = 119,617.19 × 74,873.16
  4. Step 4: Simplify right side
    79,744.70x = 8,956,116,912.03
  5. Step 5: Solve for x
    x = 8,956,116,912.03/79,744.70
  6. Step 6: Final answer
    x = 112,309.87

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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.