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Finding the Fourth Proportional to 664,308,002.20, 996,462,003.30 and 626,684,603.80

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Solution

The fourth proportional to 664,308,002.20, 996,462,003.30 and 626,684,603.80 is: 940,026,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,308,002.20 : 996,462,003.30 = 626,684,603.80 : x
  2. Step 2: Convert to fraction form
    664,308,002.20/996,462,003.30 = 626,684,603.80/x
  3. Step 3: Cross multiply
    664,308,002.20x = 996,462,003.30 × 626,684,603.80
  4. Step 4: Simplify right side
    664,308,002.20x = 624,467,395,739,814,656
  5. Step 5: Solve for x
    x = 624,467,395,739,814,656/664,308,002.20
  6. Step 6: Final answer
    x = 940,026,905.70

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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.