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Finding the Fourth Proportional to 172,872.60, 259,503.30 and 133,603.80

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Solution

The fourth proportional to 172,872.60, 259,503.30 and 133,603.80 is: 200,555.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,872.60 : 259,503.30 = 133,603.80 : x
  2. Step 2: Convert to fraction form
    172,872.60/259,503.30 = 133,603.80/x
  3. Step 3: Cross multiply
    172,872.60x = 259,503.30 × 133,603.80
  4. Step 4: Simplify right side
    172,872.60x = 34,670,626,992.54
  5. Step 5: Solve for x
    x = 34,670,626,992.54/172,872.60
  6. Step 6: Final answer
    x = 200,555.94

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1.5x scale

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.