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Finding the Fourth Proportional to 18,756,893.33, 28,134,815.11 and 5,978,164.85

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Solution

The fourth proportional to 18,756,893.33, 28,134,815.11 and 5,978,164.85 is: 8,967,079.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756,893.33 : 28,134,815.11 = 5,978,164.85 : x
  2. Step 2: Convert to fraction form
    18,756,893.33/28,134,815.11 = 5,978,164.85/x
  3. Step 3: Cross multiply
    18,756,893.33x = 28,134,815.11 × 5,978,164.85
  4. Step 4: Simplify right side
    18,756,893.33x = 168,194,562,751,850.88
  5. Step 5: Solve for x
    x = 168,194,562,751,850.88/18,756,893.33
  6. Step 6: Final answer
    x = 8,967,079.98

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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.