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Finding the Fourth Proportional to 118,843.70, 178,179.15 and 48,686.90

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Solution

The fourth proportional to 118,843.70, 178,179.15 and 48,686.90 is: 72,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,843.70 : 178,179.15 = 48,686.90 : x
  2. Step 2: Convert to fraction form
    118,843.70/178,179.15 = 48,686.90/x
  3. Step 3: Cross multiply
    118,843.70x = 178,179.15 × 48,686.90
  4. Step 4: Simplify right side
    118,843.70x = 8,674,990,458.14
  5. Step 5: Solve for x
    x = 8,674,990,458.14/118,843.70
  6. Step 6: Final answer
    x = 72,994.95

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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.