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Finding the Fourth Proportional to 467,087.01, 644,627.69 and 285,918.66

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Solution

The fourth proportional to 467,087.01, 644,627.69 and 285,918.66 is: 394,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,087.01 : 644,627.69 = 285,918.66 : x
  2. Step 2: Convert to fraction form
    467,087.01/644,627.69 = 285,918.66/x
  3. Step 3: Cross multiply
    467,087.01x = 644,627.69 × 285,918.66
  4. Step 4: Simplify right side
    467,087.01x = 184,311,085,323.70
  5. Step 5: Solve for x
    x = 184,311,085,323.70/467,087.01
  6. Step 6: Final answer
    x = 394,596.90

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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.