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Finding the Fourth Proportional to 352,157.91, 485,974.34 and 191,009.50

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Solution

The fourth proportional to 352,157.91, 485,974.34 and 191,009.50 is: 263,591.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,157.91 : 485,974.34 = 191,009.50 : x
  2. Step 2: Convert to fraction form
    352,157.91/485,974.34 = 191,009.50/x
  3. Step 3: Cross multiply
    352,157.91x = 485,974.34 × 191,009.50
  4. Step 4: Simplify right side
    352,157.91x = 92,825,715,696.23
  5. Step 5: Solve for x
    x = 92,825,715,696.23/352,157.91
  6. Step 6: Final answer
    x = 263,591.17

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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.