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Finding the Fourth Proportional to 221,959,200.35, 311,253,063.85 and 221,959,200.35

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Solution

The fourth proportional to 221,959,200.35, 311,253,063.85 and 221,959,200.35 is: 311,253,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,959,200.35 : 311,253,063.85 = 221,959,200.35 : x
  2. Step 2: Convert to fraction form
    221,959,200.35/311,253,063.85 = 221,959,200.35/x
  3. Step 3: Cross multiply
    221,959,200.35x = 311,253,063.85 × 221,959,200.35
  4. Step 4: Simplify right side
    221,959,200.35x = 69,085,481,158,633,496
  5. Step 5: Solve for x
    x = 69,085,481,158,633,496/221,959,200.35
  6. Step 6: Final answer
    x = 311,253,063.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.