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Finding the Fourth Proportional to 118,271.20, 177,493.20 and 83,279.20

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Solution

The fourth proportional to 118,271.20, 177,493.20 and 83,279.20 is: 124,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,271.20 : 177,493.20 = 83,279.20 : x
  2. Step 2: Convert to fraction form
    118,271.20/177,493.20 = 83,279.20/x
  3. Step 3: Cross multiply
    118,271.20x = 177,493.20 × 83,279.20
  4. Step 4: Simplify right side
    118,271.20x = 14,781,491,701.44
  5. Step 5: Solve for x
    x = 14,781,491,701.44/118,271.20
  6. Step 6: Final answer
    x = 124,979.64

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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.