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Finding the Fourth Proportional to 706,441.60, 1,058,107.20 and 627,644.80

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Solution

The fourth proportional to 706,441.60, 1,058,107.20 and 627,644.80 is: 940,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,441.60 : 1,058,107.20 = 627,644.80 : x
  2. Step 2: Convert to fraction form
    706,441.60/1,058,107.20 = 627,644.80/x
  3. Step 3: Cross multiply
    706,441.60x = 1,058,107.20 × 627,644.80
  4. Step 4: Simplify right side
    706,441.60x = 664,115,481,922.56
  5. Step 5: Solve for x
    x = 664,115,481,922.56/706,441.60
  6. Step 6: Final answer
    x = 940,085.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.