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Finding the Fourth Proportional to 118,052.70, 177,079.05 and 43,147.95

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Solution

The fourth proportional to 118,052.70, 177,079.05 and 43,147.95 is: 64,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,052.70 : 177,079.05 = 43,147.95 : x
  2. Step 2: Convert to fraction form
    118,052.70/177,079.05 = 43,147.95/x
  3. Step 3: Cross multiply
    118,052.70x = 177,079.05 × 43,147.95
  4. Step 4: Simplify right side
    118,052.70x = 7,640,597,995.45
  5. Step 5: Solve for x
    x = 7,640,597,995.45/118,052.70
  6. Step 6: Final answer
    x = 64,721.93

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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.