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Finding the Fourth Proportional to 682,386, 941,388.39 and 395,739.96

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Solution

The fourth proportional to 682,386, 941,388.39 and 395,739.96 is: 545,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,386 : 941,388.39 = 395,739.96 : x
  2. Step 2: Convert to fraction form
    682,386/941,388.39 = 395,739.96/x
  3. Step 3: Cross multiply
    682,386x = 941,388.39 × 395,739.96
  4. Step 4: Simplify right side
    682,386x = 372,545,003,803.06
  5. Step 5: Solve for x
    x = 372,545,003,803.06/682,386
  6. Step 6: Final answer
    x = 545,944.68

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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.