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Finding the Fourth Proportional to 118,515.69, 177,843.69 and 43,688.43

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Solution

The fourth proportional to 118,515.69, 177,843.69 and 43,688.43 is: 65,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,515.69 : 177,843.69 = 43,688.43 : x
  2. Step 2: Convert to fraction form
    118,515.69/177,843.69 = 43,688.43/x
  3. Step 3: Cross multiply
    118,515.69x = 177,843.69 × 43,688.43
  4. Step 4: Simplify right side
    118,515.69x = 7,769,711,601.51
  5. Step 5: Solve for x
    x = 7,769,711,601.51/118,515.69
  6. Step 6: Final answer
    x = 65,558.51

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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.