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Finding the Fourth Proportional to 168,000.85, 251,913.79 and 79,230.52

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Solution

The fourth proportional to 168,000.85, 251,913.79 and 79,230.52 is: 118,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,000.85 : 251,913.79 = 79,230.52 : x
  2. Step 2: Convert to fraction form
    168,000.85/251,913.79 = 79,230.52/x
  3. Step 3: Cross multiply
    168,000.85x = 251,913.79 × 79,230.52
  4. Step 4: Simplify right side
    168,000.85x = 19,959,260,576.87
  5. Step 5: Solve for x
    x = 19,959,260,576.87/168,000.85
  6. Step 6: Final answer
    x = 118,804.52

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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.