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Finding the Fourth Proportional to 486,004.49, 670,686.62 and 271,144.60

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Solution

The fourth proportional to 486,004.49, 670,686.62 and 271,144.60 is: 374,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,004.49 : 670,686.62 = 271,144.60 : x
  2. Step 2: Convert to fraction form
    486,004.49/670,686.62 = 271,144.60/x
  3. Step 3: Cross multiply
    486,004.49x = 670,686.62 × 271,144.60
  4. Step 4: Simplify right side
    486,004.49x = 181,853,055,305.25
  5. Step 5: Solve for x
    x = 181,853,055,305.25/486,004.49
  6. Step 6: Final answer
    x = 374,179.78

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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.