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Finding the Fourth Proportional to 694,987.50, 959,076.27 and 393,181.50

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Solution

The fourth proportional to 694,987.50, 959,076.27 and 393,181.50 is: 542,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,987.50 : 959,076.27 = 393,181.50 : x
  2. Step 2: Convert to fraction form
    694,987.50/959,076.27 = 393,181.50/x
  3. Step 3: Cross multiply
    694,987.50x = 959,076.27 × 393,181.50
  4. Step 4: Simplify right side
    694,987.50x = 377,091,046,453.01
  5. Step 5: Solve for x
    x = 377,091,046,453.01/694,987.50
  6. Step 6: Final answer
    x = 542,586.80

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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.