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Finding the Fourth Proportional to 69,347,262.44, 95,698,983.26 and 39,978,454.96

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Solution

The fourth proportional to 69,347,262.44, 95,698,983.26 and 39,978,454.96 is: 55,170,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,347,262.44 : 95,698,983.26 = 39,978,454.96 : x
  2. Step 2: Convert to fraction form
    69,347,262.44/95,698,983.26 = 39,978,454.96/x
  3. Step 3: Cross multiply
    69,347,262.44x = 95,698,983.26 × 39,978,454.96
  4. Step 4: Simplify right side
    69,347,262.44x = 3,825,897,491,977,704.50
  5. Step 5: Solve for x
    x = 3,825,897,491,977,704.50/69,347,262.44
  6. Step 6: Final answer
    x = 55,170,130.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.