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Finding the Fourth Proportional to 118,512.31, 177,685.47 and 43,622.74

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Solution

The fourth proportional to 118,512.31, 177,685.47 and 43,622.74 is: 65,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,512.31 : 177,685.47 = 43,622.74 : x
  2. Step 2: Convert to fraction form
    118,512.31/177,685.47 = 43,622.74/x
  3. Step 3: Cross multiply
    118,512.31x = 177,685.47 × 43,622.74
  4. Step 4: Simplify right side
    118,512.31x = 7,751,127,059.59
  5. Step 5: Solve for x
    x = 7,751,127,059.59/118,512.31
  6. Step 6: Final answer
    x = 65,403.56

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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.