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Finding the Fourth Proportional to 397,053.69, 548,162.06 and 261,481.29

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Solution

The fourth proportional to 397,053.69, 548,162.06 and 261,481.29 is: 360,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,053.69 : 548,162.06 = 261,481.29 : x
  2. Step 2: Convert to fraction form
    397,053.69/548,162.06 = 261,481.29/x
  3. Step 3: Cross multiply
    397,053.69x = 548,162.06 × 261,481.29
  4. Step 4: Simplify right side
    397,053.69x = 143,334,122,577.86
  5. Step 5: Solve for x
    x = 143,334,122,577.86/397,053.69
  6. Step 6: Final answer
    x = 360,994.31

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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.