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Finding the Fourth Proportional to 79,929.42, 119,893.92 and 75,057.67

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Solution

The fourth proportional to 79,929.42, 119,893.92 and 75,057.67 is: 112,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,929.42 : 119,893.92 = 75,057.67 : x
  2. Step 2: Convert to fraction form
    79,929.42/119,893.92 = 75,057.67/x
  3. Step 3: Cross multiply
    79,929.42x = 119,893.92 × 75,057.67
  4. Step 4: Simplify right side
    79,929.42x = 8,998,958,282.37
  5. Step 5: Solve for x
    x = 8,998,958,282.37/79,929.42
  6. Step 6: Final answer
    x = 112,586.31

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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.