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Finding the Fourth Proportional to 69,347,263.44, 95,698,984.64 and 39,978,455.96

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Solution

The fourth proportional to 69,347,263.44, 95,698,984.64 and 39,978,455.96 is: 55,170,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,347,263.44 : 95,698,984.64 = 39,978,455.96 : x
  2. Step 2: Convert to fraction form
    69,347,263.44/95,698,984.64 = 39,978,455.96/x
  3. Step 3: Cross multiply
    69,347,263.44x = 95,698,984.64 × 39,978,455.96
  4. Step 4: Simplify right side
    69,347,263.44x = 3,825,897,642,846,956.50
  5. Step 5: Solve for x
    x = 3,825,897,642,846,956.50/69,347,263.44
  6. Step 6: Final answer
    x = 55,170,131.50

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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.