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Finding the Fourth Proportional to 221,387,231.80, 331,483,650.90 and 221,387,231.80

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Solution

The fourth proportional to 221,387,231.80, 331,483,650.90 and 221,387,231.80 is: 331,483,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,387,231.80 : 331,483,650.90 = 221,387,231.80 : x
  2. Step 2: Convert to fraction form
    221,387,231.80/331,483,650.90 = 221,387,231.80/x
  3. Step 3: Cross multiply
    221,387,231.80x = 331,483,650.90 × 221,387,231.80
  4. Step 4: Simplify right side
    221,387,231.80x = 73,386,247,859,708,576
  5. Step 5: Solve for x
    x = 73,386,247,859,708,576/221,387,231.80
  6. Step 6: Final answer
    x = 331,483,650.90

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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.