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Finding the Fourth Proportional to 155,892,716.80, 218,608,121.60 and 155,892,716.80

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Solution

The fourth proportional to 155,892,716.80, 218,608,121.60 and 155,892,716.80 is: 218,608,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,892,716.80 : 218,608,121.60 = 155,892,716.80 : x
  2. Step 2: Convert to fraction form
    155,892,716.80/218,608,121.60 = 155,892,716.80/x
  3. Step 3: Cross multiply
    155,892,716.80x = 218,608,121.60 × 155,892,716.80
  4. Step 4: Simplify right side
    155,892,716.80x = 34,079,413,990,768,764
  5. Step 5: Solve for x
    x = 34,079,413,990,768,764/155,892,716.80
  6. Step 6: Final answer
    x = 218,608,121.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.