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Finding the Fourth Proportional to 168,778.70, 253,135.65 and 50,453.90

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Solution

The fourth proportional to 168,778.70, 253,135.65 and 50,453.90 is: 75,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,778.70 : 253,135.65 = 50,453.90 : x
  2. Step 2: Convert to fraction form
    168,778.70/253,135.65 = 50,453.90/x
  3. Step 3: Cross multiply
    168,778.70x = 253,135.65 × 50,453.90
  4. Step 4: Simplify right side
    168,778.70x = 12,771,680,771.54
  5. Step 5: Solve for x
    x = 12,771,680,771.54/168,778.70
  6. Step 6: Final answer
    x = 75,671.16

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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.