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Finding the Fourth Proportional to 664,356,616.80, 996,529,676.40 and 173,068,936.80

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Solution

The fourth proportional to 664,356,616.80, 996,529,676.40 and 173,068,936.80 is: 259,602,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,356,616.80 : 996,529,676.40 = 173,068,936.80 : x
  2. Step 2: Convert to fraction form
    664,356,616.80/996,529,676.40 = 173,068,936.80/x
  3. Step 3: Cross multiply
    664,356,616.80x = 996,529,676.40 × 173,068,936.80
  4. Step 4: Simplify right side
    664,356,616.80x = 172,468,331,584,196,064
  5. Step 5: Solve for x
    x = 172,468,331,584,196,064/664,356,616.80
  6. Step 6: Final answer
    x = 259,602,037.86

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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.