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Finding the Fourth Proportional to 695,435.91, 959,637.02 and 393,629.91

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Solution

The fourth proportional to 695,435.91, 959,637.02 and 393,629.91 is: 543,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,435.91 : 959,637.02 = 393,629.91 : x
  2. Step 2: Convert to fraction form
    695,435.91/959,637.02 = 393,629.91/x
  3. Step 3: Cross multiply
    695,435.91x = 959,637.02 × 393,629.91
  4. Step 4: Simplify right side
    695,435.91x = 377,741,831,847.12
  5. Step 5: Solve for x
    x = 377,741,831,847.12/695,435.91
  6. Step 6: Final answer
    x = 543,172.74

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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.