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Finding the Fourth Proportional to 57,738,978.36, 86,601,238.29 and 18,874,173.15

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Solution

The fourth proportional to 57,738,978.36, 86,601,238.29 and 18,874,173.15 is: 28,308,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,738,978.36 : 86,601,238.29 = 18,874,173.15 : x
  2. Step 2: Convert to fraction form
    57,738,978.36/86,601,238.29 = 18,874,173.15/x
  3. Step 3: Cross multiply
    57,738,978.36x = 86,601,238.29 × 18,874,173.15
  4. Step 4: Simplify right side
    57,738,978.36x = 1,634,526,766,489,870
  5. Step 5: Solve for x
    x = 1,634,526,766,489,870/57,738,978.36
  6. Step 6: Final answer
    x = 28,308,896.57

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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.