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Finding the Fourth Proportional to 221,228,464.80, 331,245,500.40 and 221,228,464.80

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Solution

The fourth proportional to 221,228,464.80, 331,245,500.40 and 221,228,464.80 is: 331,245,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,228,464.80 : 331,245,500.40 = 221,228,464.80 : x
  2. Step 2: Convert to fraction form
    221,228,464.80/331,245,500.40 = 221,228,464.80/x
  3. Step 3: Cross multiply
    221,228,464.80x = 331,245,500.40 × 221,228,464.80
  4. Step 4: Simplify right side
    221,228,464.80x = 73,280,933,525,399,792
  5. Step 5: Solve for x
    x = 73,280,933,525,399,792/221,228,464.80
  6. Step 6: Final answer
    x = 331,245,500.40

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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.