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Finding the Fourth Proportional to 6,877,979.63, 9,481,608.24 and 4,806,564.20

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Solution

The fourth proportional to 6,877,979.63, 9,481,608.24 and 4,806,564.20 is: 6,626,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,877,979.63 : 9,481,608.24 = 4,806,564.20 : x
  2. Step 2: Convert to fraction form
    6,877,979.63/9,481,608.24 = 4,806,564.20/x
  3. Step 3: Cross multiply
    6,877,979.63x = 9,481,608.24 × 4,806,564.20
  4. Step 4: Simplify right side
    6,877,979.63x = 45,573,958,677,400.97
  5. Step 5: Solve for x
    x = 45,573,958,677,400.97/6,877,979.63
  6. Step 6: Final answer
    x = 6,626,067.71

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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.