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Finding the Fourth Proportional to 940,523.20, 1,408,711.20 and 816,107.20

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Solution

The fourth proportional to 940,523.20, 1,408,711.20 and 816,107.20 is: 1,222,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,523.20 : 1,408,711.20 = 816,107.20 : x
  2. Step 2: Convert to fraction form
    940,523.20/1,408,711.20 = 816,107.20/x
  3. Step 3: Cross multiply
    940,523.20x = 1,408,711.20 × 816,107.20
  4. Step 4: Simplify right side
    940,523.20x = 1,149,659,353,040.64
  5. Step 5: Solve for x
    x = 1,149,659,353,040.64/940,523.20
  6. Step 6: Final answer
    x = 1,222,361.50

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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.