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Finding the Fourth Proportional to 623,605.65, 860,554.85 and 394,286.37

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Solution

The fourth proportional to 623,605.65, 860,554.85 and 394,286.37 is: 544,101.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,605.65 : 860,554.85 = 394,286.37 : x
  2. Step 2: Convert to fraction form
    623,605.65/860,554.85 = 394,286.37/x
  3. Step 3: Cross multiply
    623,605.65x = 860,554.85 × 394,286.37
  4. Step 4: Simplify right side
    623,605.65x = 339,305,046,020.96
  5. Step 5: Solve for x
    x = 339,305,046,020.96/623,605.65
  6. Step 6: Final answer
    x = 544,101.94

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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.