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Finding the Fourth Proportional to 414,958.60, 621,004.30 and 248,865.80

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Solution

The fourth proportional to 414,958.60, 621,004.30 and 248,865.80 is: 372,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,958.60 : 621,004.30 = 248,865.80 : x
  2. Step 2: Convert to fraction form
    414,958.60/621,004.30 = 248,865.80/x
  3. Step 3: Cross multiply
    414,958.60x = 621,004.30 × 248,865.80
  4. Step 4: Simplify right side
    414,958.60x = 154,546,731,922.94
  5. Step 5: Solve for x
    x = 154,546,731,922.94/414,958.60
  6. Step 6: Final answer
    x = 372,438.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.