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Finding the Fourth Proportional to 635,653,134.60, 952,965,163.51 and 198,728,916.45

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Solution

The fourth proportional to 635,653,134.60, 952,965,163.51 and 198,728,916.45 is: 297,932,510.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,653,134.60 : 952,965,163.51 = 198,728,916.45 : x
  2. Step 2: Convert to fraction form
    635,653,134.60/952,965,163.51 = 198,728,916.45/x
  3. Step 3: Cross multiply
    635,653,134.60x = 952,965,163.51 × 198,728,916.45
  4. Step 4: Simplify right side
    635,653,134.60x = 189,381,734,358,939,360
  5. Step 5: Solve for x
    x = 189,381,734,358,939,360/635,653,134.60
  6. Step 6: Final answer
    x = 297,932,510.75

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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.