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Finding the Fourth Proportional to 395,914.08, 546,610.56 and 275,016.48

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Solution

The fourth proportional to 395,914.08, 546,610.56 and 275,016.48 is: 379,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,914.08 : 546,610.56 = 275,016.48 : x
  2. Step 2: Convert to fraction form
    395,914.08/546,610.56 = 275,016.48/x
  3. Step 3: Cross multiply
    395,914.08x = 546,610.56 × 275,016.48
  4. Step 4: Simplify right side
    395,914.08x = 150,326,912,142.03
  5. Step 5: Solve for x
    x = 150,326,912,142.03/395,914.08
  6. Step 6: Final answer
    x = 379,695.80

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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.