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Finding the Fourth Proportional to 503,778.21, 695,160.99 and 285,917.60

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Solution

The fourth proportional to 503,778.21, 695,160.99 and 285,917.60 is: 394,536.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,778.21 : 695,160.99 = 285,917.60 : x
  2. Step 2: Convert to fraction form
    503,778.21/695,160.99 = 285,917.60/x
  3. Step 3: Cross multiply
    503,778.21x = 695,160.99 × 285,917.60
  4. Step 4: Simplify right side
    503,778.21x = 198,758,761,874.42
  5. Step 5: Solve for x
    x = 198,758,761,874.42/503,778.21
  6. Step 6: Final answer
    x = 394,536.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.