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Finding the Fourth Proportional to 414,488.40, 622,039.80 and 274,200.40

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Solution

The fourth proportional to 414,488.40, 622,039.80 and 274,200.40 is: 411,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,488.40 : 622,039.80 = 274,200.40 : x
  2. Step 2: Convert to fraction form
    414,488.40/622,039.80 = 274,200.40/x
  3. Step 3: Cross multiply
    414,488.40x = 622,039.80 × 274,200.40
  4. Step 4: Simplify right side
    414,488.40x = 170,563,561,975.92
  5. Step 5: Solve for x
    x = 170,563,561,975.92/414,488.40
  6. Step 6: Final answer
    x = 411,503.82

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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.