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Finding the Fourth Proportional to 605,241.78, 835,236.14 and 347,128.68

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Solution

The fourth proportional to 605,241.78, 835,236.14 and 347,128.68 is: 479,039.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,241.78 : 835,236.14 = 347,128.68 : x
  2. Step 2: Convert to fraction form
    605,241.78/835,236.14 = 347,128.68/x
  3. Step 3: Cross multiply
    605,241.78x = 835,236.14 × 347,128.68
  4. Step 4: Simplify right side
    605,241.78x = 289,934,418,766.50
  5. Step 5: Solve for x
    x = 289,934,418,766.50/605,241.78
  6. Step 6: Final answer
    x = 479,039.00

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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.