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Finding the Fourth Proportional to 7,093,872.39, 9,789,573.79 and 3,996,432.91

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Solution

The fourth proportional to 7,093,872.39, 9,789,573.79 and 3,996,432.91 is: 5,515,094.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,093,872.39 : 9,789,573.79 = 3,996,432.91 : x
  2. Step 2: Convert to fraction form
    7,093,872.39/9,789,573.79 = 3,996,432.91/x
  3. Step 3: Cross multiply
    7,093,872.39x = 9,789,573.79 × 3,996,432.91
  4. Step 4: Simplify right side
    7,093,872.39x = 39,123,374,879,220.52
  5. Step 5: Solve for x
    x = 39,123,374,879,220.52/7,093,872.39
  6. Step 6: Final answer
    x = 5,515,094.26

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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.