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Finding the Fourth Proportional to 338,818.72, 508,274.90 and 114,243.36

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Solution

The fourth proportional to 338,818.72, 508,274.90 and 114,243.36 is: 171,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,818.72 : 508,274.90 = 114,243.36 : x
  2. Step 2: Convert to fraction form
    338,818.72/508,274.90 = 114,243.36/x
  3. Step 3: Cross multiply
    338,818.72x = 508,274.90 × 114,243.36
  4. Step 4: Simplify right side
    338,818.72x = 58,067,032,379.66
  5. Step 5: Solve for x
    x = 58,067,032,379.66/338,818.72
  6. Step 6: Final answer
    x = 171,380.83

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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.