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Finding the Fourth Proportional to 6,330,679.52, 8,731,517.22 and 5,449,128.92

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Solution

The fourth proportional to 6,330,679.52, 8,731,517.22 and 5,449,128.92 is: 7,515,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,330,679.52 : 8,731,517.22 = 5,449,128.92 : x
  2. Step 2: Convert to fraction form
    6,330,679.52/8,731,517.22 = 5,449,128.92/x
  3. Step 3: Cross multiply
    6,330,679.52x = 8,731,517.22 × 5,449,128.92
  4. Step 4: Simplify right side
    6,330,679.52x = 47,579,162,998,980.01
  5. Step 5: Solve for x
    x = 47,579,162,998,980.01/6,330,679.52
  6. Step 6: Final answer
    x = 7,515,648.65

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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.