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Finding the Fourth Proportional to 679,860,183.03, 935,940,642.45 and 648,624,406.08

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Solution

The fourth proportional to 679,860,183.03, 935,940,642.45 and 648,624,406.08 is: 892,939,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,860,183.03 : 935,940,642.45 = 648,624,406.08 : x
  2. Step 2: Convert to fraction form
    679,860,183.03/935,940,642.45 = 648,624,406.08/x
  3. Step 3: Cross multiply
    679,860,183.03x = 935,940,642.45 × 648,624,406.08
  4. Step 4: Simplify right side
    679,860,183.03x = 607,073,943,336,342,272
  5. Step 5: Solve for x
    x = 607,073,943,336,342,272/679,860,183.03
  6. Step 6: Final answer
    x = 892,939,399.15

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