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Finding the Fourth Proportional to 118,618.70, 177,813.75 and 43,697.89

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Solution

The fourth proportional to 118,618.70, 177,813.75 and 43,697.89 is: 65,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,618.70 : 177,813.75 = 43,697.89 : x
  2. Step 2: Convert to fraction form
    118,618.70/177,813.75 = 43,697.89/x
  3. Step 3: Cross multiply
    118,618.70x = 177,813.75 × 43,697.89
  4. Step 4: Simplify right side
    118,618.70x = 7,770,085,687.99
  5. Step 5: Solve for x
    x = 7,770,085,687.99/118,618.70
  6. Step 6: Final answer
    x = 65,504.73

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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.