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Finding the Fourth Proportional to 13,261,993,743.20, 19,892,990,614.80 and 13,261,993,743.20

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Solution

The fourth proportional to 13,261,993,743.20, 19,892,990,614.80 and 13,261,993,743.20 is: 19,892,990,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261,993,743.20 : 19,892,990,614.80 = 13,261,993,743.20 : x
  2. Step 2: Convert to fraction form
    13,261,993,743.20/19,892,990,614.80 = 13,261,993,743.20/x
  3. Step 3: Cross multiply
    13,261,993,743.20x = 19,892,990,614.80 × 13,261,993,743.20
  4. Step 4: Simplify right side
    13,261,993,743.20x = 263,820,717,067,013,914,624
  5. Step 5: Solve for x
    x = 263,820,717,067,013,914,624/13,261,993,743.20
  6. Step 6: Final answer
    x = 19,892,990,614.80

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1.5x scale

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.