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Finding the Fourth Proportional to 118,238.80, 177,358.20 and 113,573.20

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Solution

The fourth proportional to 118,238.80, 177,358.20 and 113,573.20 is: 170,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,238.80 : 177,358.20 = 113,573.20 : x
  2. Step 2: Convert to fraction form
    118,238.80/177,358.20 = 113,573.20/x
  3. Step 3: Cross multiply
    118,238.80x = 177,358.20 × 113,573.20
  4. Step 4: Simplify right side
    118,238.80x = 20,143,138,320.24
  5. Step 5: Solve for x
    x = 20,143,138,320.24/118,238.80
  6. Step 6: Final answer
    x = 170,359.80

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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.