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Finding the Fourth Proportional to 356,633.54, 535,020.38 and 131,995.92

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Solution

The fourth proportional to 356,633.54, 535,020.38 and 131,995.92 is: 198,019.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,633.54 : 535,020.38 = 131,995.92 : x
  2. Step 2: Convert to fraction form
    356,633.54/535,020.38 = 131,995.92/x
  3. Step 3: Cross multiply
    356,633.54x = 535,020.38 × 131,995.92
  4. Step 4: Simplify right side
    356,633.54x = 70,620,507,276.85
  5. Step 5: Solve for x
    x = 70,620,507,276.85/356,633.54
  6. Step 6: Final answer
    x = 198,019.81

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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.