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Finding the Fourth Proportional to 394,804.54, 544,828.68 and 213,516.69

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Solution

The fourth proportional to 394,804.54, 544,828.68 and 213,516.69 is: 294,652.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,804.54 : 544,828.68 = 213,516.69 : x
  2. Step 2: Convert to fraction form
    394,804.54/544,828.68 = 213,516.69/x
  3. Step 3: Cross multiply
    394,804.54x = 544,828.68 × 213,516.69
  4. Step 4: Simplify right side
    394,804.54x = 116,330,016,370.67
  5. Step 5: Solve for x
    x = 116,330,016,370.67/394,804.54
  6. Step 6: Final answer
    x = 294,652.17

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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.