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Finding the Fourth Proportional to 339,745.32, 509,393.81 and 190,001.43

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Solution

The fourth proportional to 339,745.32, 509,393.81 and 190,001.43 is: 284,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,745.32 : 509,393.81 = 190,001.43 : x
  2. Step 2: Convert to fraction form
    339,745.32/509,393.81 = 190,001.43/x
  3. Step 3: Cross multiply
    339,745.32x = 509,393.81 × 190,001.43
  4. Step 4: Simplify right side
    339,745.32x = 96,785,552,808.15
  5. Step 5: Solve for x
    x = 96,785,552,808.15/339,745.32
  6. Step 6: Final answer
    x = 284,876.78

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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.