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Finding the Fourth Proportional to 1,293,215.93, 1,939,823.91 and 394,662.27

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Solution

The fourth proportional to 1,293,215.93, 1,939,823.91 and 394,662.27 is: 591,993.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,215.93 : 1,939,823.91 = 394,662.27 : x
  2. Step 2: Convert to fraction form
    1,293,215.93/1,939,823.91 = 394,662.27/x
  3. Step 3: Cross multiply
    1,293,215.93x = 1,939,823.91 × 394,662.27
  4. Step 4: Simplify right side
    1,293,215.93x = 765,575,307,720.88
  5. Step 5: Solve for x
    x = 765,575,307,720.88/1,293,215.93
  6. Step 6: Final answer
    x = 591,993.41

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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.