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Finding the Fourth Proportional to 639,398,045.03, 959,097,067.54 and 639,398,045.03

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Solution

The fourth proportional to 639,398,045.03, 959,097,067.54 and 639,398,045.03 is: 959,097,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,398,045.03 : 959,097,067.54 = 639,398,045.03 : x
  2. Step 2: Convert to fraction form
    639,398,045.03/959,097,067.54 = 639,398,045.03/x
  3. Step 3: Cross multiply
    639,398,045.03x = 959,097,067.54 × 639,398,045.03
  4. Step 4: Simplify right side
    639,398,045.03x = 613,244,789,972,687,872
  5. Step 5: Solve for x
    x = 613,244,789,972,687,872/639,398,045.03
  6. Step 6: Final answer
    x = 959,097,067.54

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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.