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Finding the Fourth Proportional to 118,672.80, 178,074.72 and 48,601.20

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Solution

The fourth proportional to 118,672.80, 178,074.72 and 48,601.20 is: 72,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,672.80 : 178,074.72 = 48,601.20 : x
  2. Step 2: Convert to fraction form
    118,672.80/178,074.72 = 48,601.20/x
  3. Step 3: Cross multiply
    118,672.80x = 178,074.72 × 48,601.20
  4. Step 4: Simplify right side
    118,672.80x = 8,654,645,081.66
  5. Step 5: Solve for x
    x = 8,654,645,081.66/118,672.80
  6. Step 6: Final answer
    x = 72,928.63

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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.