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Finding the Fourth Proportional to 447,604.44, 617,687.78 and 243,657.05

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Solution

The fourth proportional to 447,604.44, 617,687.78 and 243,657.05 is: 336,243.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,604.44 : 617,687.78 = 243,657.05 : x
  2. Step 2: Convert to fraction form
    447,604.44/617,687.78 = 243,657.05/x
  3. Step 3: Cross multiply
    447,604.44x = 617,687.78 × 243,657.05
  4. Step 4: Simplify right side
    447,604.44x = 150,503,980,595.00
  5. Step 5: Solve for x
    x = 150,503,980,595.00/447,604.44
  6. Step 6: Final answer
    x = 336,243.27

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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.