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Finding the Fourth Proportional to 694,961,548.84, 958,813,604.94 and 393,505,669

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Solution

The fourth proportional to 694,961,548.84, 958,813,604.94 and 393,505,669 is: 542,905,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,961,548.84 : 958,813,604.94 = 393,505,669 : x
  2. Step 2: Convert to fraction form
    694,961,548.84/958,813,604.94 = 393,505,669/x
  3. Step 3: Cross multiply
    694,961,548.84x = 958,813,604.94 × 393,505,669
  4. Step 4: Simplify right side
    694,961,548.84x = 377,298,589,058,216,448
  5. Step 5: Solve for x
    x = 377,298,589,058,216,448/694,961,548.84
  6. Step 6: Final answer
    x = 542,905,704.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.