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Finding the Fourth Proportional to 404,145.72, 606,042.74 and 115,893.88

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Solution

The fourth proportional to 404,145.72, 606,042.74 and 115,893.88 is: 173,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,145.72 : 606,042.74 = 115,893.88 : x
  2. Step 2: Convert to fraction form
    404,145.72/606,042.74 = 115,893.88/x
  3. Step 3: Cross multiply
    404,145.72x = 606,042.74 × 115,893.88
  4. Step 4: Simplify right side
    404,145.72x = 70,236,644,584.43
  5. Step 5: Solve for x
    x = 70,236,644,584.43/404,145.72
  6. Step 6: Final answer
    x = 173,790.40

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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.