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Finding the Fourth Proportional to 644,958.65, 888,010.09 and 585,171.54

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Solution

The fourth proportional to 644,958.65, 888,010.09 and 585,171.54 is: 805,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,958.65 : 888,010.09 = 585,171.54 : x
  2. Step 2: Convert to fraction form
    644,958.65/888,010.09 = 585,171.54/x
  3. Step 3: Cross multiply
    644,958.65x = 888,010.09 × 585,171.54
  4. Step 4: Simplify right side
    644,958.65x = 519,638,230,437.91
  5. Step 5: Solve for x
    x = 519,638,230,437.91/644,958.65
  6. Step 6: Final answer
    x = 805,692.32

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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.