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Finding the Fourth Proportional to 298,634.30, 447,945.94 and 73,995.28

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Solution

The fourth proportional to 298,634.30, 447,945.94 and 73,995.28 is: 110,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,634.30 : 447,945.94 = 73,995.28 : x
  2. Step 2: Convert to fraction form
    298,634.30/447,945.94 = 73,995.28/x
  3. Step 3: Cross multiply
    298,634.30x = 447,945.94 × 73,995.28
  4. Step 4: Simplify right side
    298,634.30x = 33,145,885,255.16
  5. Step 5: Solve for x
    x = 33,145,885,255.16/298,634.30
  6. Step 6: Final answer
    x = 110,991.55

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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.