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Finding the Fourth Proportional to 7,992,474.30, 11,978,869.95 and 5,433,684.30

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Solution

The fourth proportional to 7,992,474.30, 11,978,869.95 and 5,433,684.30 is: 8,143,835.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992,474.30 : 11,978,869.95 = 5,433,684.30 : x
  2. Step 2: Convert to fraction form
    7,992,474.30/11,978,869.95 = 5,433,684.30/x
  3. Step 3: Cross multiply
    7,992,474.30x = 11,978,869.95 × 5,433,684.30
  4. Step 4: Simplify right side
    7,992,474.30x = 65,089,397,579,056.78
  5. Step 5: Solve for x
    x = 65,089,397,579,056.78/7,992,474.30
  6. Step 6: Final answer
    x = 8,143,835.71

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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.