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Finding the Fourth Proportional to 664,308,046.20, 996,462,069.30 and 626,684,647.80

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Solution

The fourth proportional to 664,308,046.20, 996,462,069.30 and 626,684,647.80 is: 940,026,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,308,046.20 : 996,462,069.30 = 626,684,647.80 : x
  2. Step 2: Convert to fraction form
    664,308,046.20/996,462,069.30 = 626,684,647.80/x
  3. Step 3: Cross multiply
    664,308,046.20x = 996,462,069.30 × 626,684,647.80
  4. Step 4: Simplify right side
    664,308,046.20x = 624,467,480,945,329,664
  5. Step 5: Solve for x
    x = 624,467,480,945,329,664/664,308,046.20
  6. Step 6: Final answer
    x = 940,026,971.70

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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.