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Finding the Fourth Proportional to 69,347,260.93, 95,698,981.20 and 39,978,453.46

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Solution

The fourth proportional to 69,347,260.93, 95,698,981.20 and 39,978,453.46 is: 55,170,128.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,347,260.93 : 95,698,981.20 = 39,978,453.46 : x
  2. Step 2: Convert to fraction form
    69,347,260.93/95,698,981.20 = 39,978,453.46/x
  3. Step 3: Cross multiply
    69,347,260.93x = 95,698,981.20 × 39,978,453.46
  4. Step 4: Simplify right side
    69,347,260.93x = 3,825,897,266,073,615
  5. Step 5: Solve for x
    x = 3,825,897,266,073,615/69,347,260.93
  6. Step 6: Final answer
    x = 55,170,128.06

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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.