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Finding the Fourth Proportional to 118,080.20, 177,120.30 and 48,009.80

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Solution

The fourth proportional to 118,080.20, 177,120.30 and 48,009.80 is: 72,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,080.20 : 177,120.30 = 48,009.80 : x
  2. Step 2: Convert to fraction form
    118,080.20/177,120.30 = 48,009.80/x
  3. Step 3: Cross multiply
    118,080.20x = 177,120.30 × 48,009.80
  4. Step 4: Simplify right side
    118,080.20x = 8,503,510,178.94
  5. Step 5: Solve for x
    x = 8,503,510,178.94/118,080.20
  6. Step 6: Final answer
    x = 72,014.70

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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.