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Finding the Fourth Proportional to 118,976.80, 178,275.64 and 62,814.64

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Solution

The fourth proportional to 118,976.80, 178,275.64 and 62,814.64 is: 94,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,976.80 : 178,275.64 = 62,814.64 : x
  2. Step 2: Convert to fraction form
    118,976.80/178,275.64 = 62,814.64/x
  3. Step 3: Cross multiply
    118,976.80x = 178,275.64 × 62,814.64
  4. Step 4: Simplify right side
    118,976.80x = 11,198,320,147.37
  5. Step 5: Solve for x
    x = 11,198,320,147.37/118,976.80
  6. Step 6: Final answer
    x = 94,121.88

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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.