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Finding the Fourth Proportional to 133,059,993.60, 199,589,990.40 and 64,946,380.80

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Solution

The fourth proportional to 133,059,993.60, 199,589,990.40 and 64,946,380.80 is: 97,419,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,059,993.60 : 199,589,990.40 = 64,946,380.80 : x
  2. Step 2: Convert to fraction form
    133,059,993.60/199,589,990.40 = 64,946,380.80/x
  3. Step 3: Cross multiply
    133,059,993.60x = 199,589,990.40 × 64,946,380.80
  4. Step 4: Simplify right side
    133,059,993.60x = 12,962,647,520,386,744
  5. Step 5: Solve for x
    x = 12,962,647,520,386,744/133,059,993.60
  6. Step 6: Final answer
    x = 97,419,571.20

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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.