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Finding the Fourth Proportional to 695,790, 960,190.20 and 394,042.32

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Solution

The fourth proportional to 695,790, 960,190.20 and 394,042.32 is: 543,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,790 : 960,190.20 = 394,042.32 : x
  2. Step 2: Convert to fraction form
    695,790/960,190.20 = 394,042.32/x
  3. Step 3: Cross multiply
    695,790x = 960,190.20 × 394,042.32
  4. Step 4: Simplify right side
    695,790x = 378,355,574,049.26
  5. Step 5: Solve for x
    x = 378,355,574,049.26/695,790
  6. Step 6: Final answer
    x = 543,778.40

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1.5x scale

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.