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Finding the Fourth Proportional to 159,317.48, 219,846.02 and 91,333.80

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Solution

The fourth proportional to 159,317.48, 219,846.02 and 91,333.80 is: 126,033.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,317.48 : 219,846.02 = 91,333.80 : x
  2. Step 2: Convert to fraction form
    159,317.48/219,846.02 = 91,333.80/x
  3. Step 3: Cross multiply
    159,317.48x = 219,846.02 × 91,333.80
  4. Step 4: Simplify right side
    159,317.48x = 20,079,372,421.48
  5. Step 5: Solve for x
    x = 20,079,372,421.48/159,317.48
  6. Step 6: Final answer
    x = 126,033.71

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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.