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Finding the Fourth Proportional to 1,293,212.93, 1,939,819.41 and 394,659.27

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Solution

The fourth proportional to 1,293,212.93, 1,939,819.41 and 394,659.27 is: 591,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,212.93 : 1,939,819.41 = 394,659.27 : x
  2. Step 2: Convert to fraction form
    1,293,212.93/1,939,819.41 = 394,659.27/x
  3. Step 3: Cross multiply
    1,293,212.93x = 1,939,819.41 × 394,659.27
  4. Step 4: Simplify right side
    1,293,212.93x = 765,567,712,282.43
  5. Step 5: Solve for x
    x = 765,567,712,282.43/1,293,212.93
  6. Step 6: Final answer
    x = 591,988.91

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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.