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Finding the Fourth Proportional to 328,906.36, 453,891.86 and 178,003.32

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Solution

The fourth proportional to 328,906.36, 453,891.86 and 178,003.32 is: 245,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,906.36 : 453,891.86 = 178,003.32 : x
  2. Step 2: Convert to fraction form
    328,906.36/453,891.86 = 178,003.32/x
  3. Step 3: Cross multiply
    328,906.36x = 453,891.86 × 178,003.32
  4. Step 4: Simplify right side
    328,906.36x = 80,794,258,000.98
  5. Step 5: Solve for x
    x = 80,794,258,000.98/328,906.36
  6. Step 6: Final answer
    x = 245,645.17

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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.