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Finding the Fourth Proportional to 79,940.81, 119,916.41 and 26,630.52

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Solution

The fourth proportional to 79,940.81, 119,916.41 and 26,630.52 is: 39,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,940.81 : 119,916.41 = 26,630.52 : x
  2. Step 2: Convert to fraction form
    79,940.81/119,916.41 = 26,630.52/x
  3. Step 3: Cross multiply
    79,940.81x = 119,916.41 × 26,630.52
  4. Step 4: Simplify right side
    79,940.81x = 3,193,436,354.83
  5. Step 5: Solve for x
    x = 3,193,436,354.83/79,940.81
  6. Step 6: Final answer
    x = 39,947.51

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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.