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Finding the Fourth Proportional to 141,755.99, 195,623.25 and 78,093.78

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Solution

The fourth proportional to 141,755.99, 195,623.25 and 78,093.78 is: 107,769.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,755.99 : 195,623.25 = 78,093.78 : x
  2. Step 2: Convert to fraction form
    141,755.99/195,623.25 = 78,093.78/x
  3. Step 3: Cross multiply
    141,755.99x = 195,623.25 × 78,093.78
  4. Step 4: Simplify right side
    141,755.99x = 15,276,958,657.92
  5. Step 5: Solve for x
    x = 15,276,958,657.92/141,755.99
  6. Step 6: Final answer
    x = 107,769.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.