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Finding the Fourth Proportional to 635,653,130.60, 952,965,157.52 and 198,728,912.45

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Solution

The fourth proportional to 635,653,130.60, 952,965,157.52 and 198,728,912.45 is: 297,932,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,653,130.60 : 952,965,157.52 = 198,728,912.45 : x
  2. Step 2: Convert to fraction form
    635,653,130.60/952,965,157.52 = 198,728,912.45/x
  3. Step 3: Cross multiply
    635,653,130.60x = 952,965,157.52 × 198,728,912.45
  4. Step 4: Simplify right side
    635,653,130.60x = 189,381,729,355,698,880
  5. Step 5: Solve for x
    x = 189,381,729,355,698,880/635,653,130.60
  6. Step 6: Final answer
    x = 297,932,504.76

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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.