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Finding the Fourth Proportional to 493,131.70, 739,150.80 and 193,512.70

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Solution

The fourth proportional to 493,131.70, 739,150.80 and 193,512.70 is: 290,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,131.70 : 739,150.80 = 193,512.70 : x
  2. Step 2: Convert to fraction form
    493,131.70/739,150.80 = 193,512.70/x
  3. Step 3: Cross multiply
    493,131.70x = 739,150.80 × 193,512.70
  4. Step 4: Simplify right side
    493,131.70x = 143,035,067,015.16
  5. Step 5: Solve for x
    x = 143,035,067,015.16/493,131.70
  6. Step 6: Final answer
    x = 290,054.50

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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.