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Finding the Fourth Proportional to 172,836.80, 259,255.20 and 48,177.80

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Solution

The fourth proportional to 172,836.80, 259,255.20 and 48,177.80 is: 72,266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,836.80 : 259,255.20 = 48,177.80 : x
  2. Step 2: Convert to fraction form
    172,836.80/259,255.20 = 48,177.80/x
  3. Step 3: Cross multiply
    172,836.80x = 259,255.20 × 48,177.80
  4. Step 4: Simplify right side
    172,836.80x = 12,490,345,174.56
  5. Step 5: Solve for x
    x = 12,490,345,174.56/172,836.80
  6. Step 6: Final answer
    x = 72,266.70

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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.