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Finding the Fourth Proportional to 414,516.40, 622,081.80 and 274,228.40

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Solution

The fourth proportional to 414,516.40, 622,081.80 and 274,228.40 is: 411,545.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,516.40 : 622,081.80 = 274,228.40 : x
  2. Step 2: Convert to fraction form
    414,516.40/622,081.80 = 274,228.40/x
  3. Step 3: Cross multiply
    414,516.40x = 622,081.80 × 274,228.40
  4. Step 4: Simplify right side
    414,516.40x = 170,592,496,683.12
  5. Step 5: Solve for x
    x = 170,592,496,683.12/414,516.40
  6. Step 6: Final answer
    x = 411,545.83

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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.