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Finding the Fourth Proportional to 103,834.80, 155,694.60 and 41,434.80

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Solution

The fourth proportional to 103,834.80, 155,694.60 and 41,434.80 is: 62,129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,834.80 : 155,694.60 = 41,434.80 : x
  2. Step 2: Convert to fraction form
    103,834.80/155,694.60 = 41,434.80/x
  3. Step 3: Cross multiply
    103,834.80x = 155,694.60 × 41,434.80
  4. Step 4: Simplify right side
    103,834.80x = 6,451,174,612.08
  5. Step 5: Solve for x
    x = 6,451,174,612.08/103,834.80
  6. Step 6: Final answer
    x = 62,129.21

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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.