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Finding the Fourth Proportional to 6,463,986.25, 8,920,361.21 and 3,563,480.91

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Solution

The fourth proportional to 6,463,986.25, 8,920,361.21 and 3,563,480.91 is: 4,917,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463,986.25 : 8,920,361.21 = 3,563,480.91 : x
  2. Step 2: Convert to fraction form
    6,463,986.25/8,920,361.21 = 3,563,480.91/x
  3. Step 3: Cross multiply
    6,463,986.25x = 8,920,361.21 × 3,563,480.91
  4. Step 4: Simplify right side
    6,463,986.25x = 31,787,536,882,139.50
  5. Step 5: Solve for x
    x = 31,787,536,882,139.50/6,463,986.25
  6. Step 6: Final answer
    x = 4,917,636.83

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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.