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Finding the Fourth Proportional to 143,496.86, 198,025.67 and 79,834.64

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Solution

The fourth proportional to 143,496.86, 198,025.67 and 79,834.64 is: 110,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,496.86 : 198,025.67 = 79,834.64 : x
  2. Step 2: Convert to fraction form
    143,496.86/198,025.67 = 79,834.64/x
  3. Step 3: Cross multiply
    143,496.86x = 198,025.67 × 79,834.64
  4. Step 4: Simplify right side
    143,496.86x = 15,809,307,676.04
  5. Step 5: Solve for x
    x = 15,809,307,676.04/143,496.86
  6. Step 6: Final answer
    x = 110,171.80

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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.