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Finding the Fourth Proportional to 235,640.73, 353,515.78 and 77,859.62

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Solution

The fourth proportional to 235,640.73, 353,515.78 and 77,859.62 is: 116,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,640.73 : 353,515.78 = 77,859.62 : x
  2. Step 2: Convert to fraction form
    235,640.73/353,515.78 = 77,859.62/x
  3. Step 3: Cross multiply
    235,640.73x = 353,515.78 × 77,859.62
  4. Step 4: Simplify right side
    235,640.73x = 27,524,604,294.80
  5. Step 5: Solve for x
    x = 27,524,604,294.80/235,640.73
  6. Step 6: Final answer
    x = 116,807.50

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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.