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Finding the Fourth Proportional to 5,198,379.64, 7,799,340.06 and 2,802,454.60

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Solution

The fourth proportional to 5,198,379.64, 7,799,340.06 and 2,802,454.60 is: 4,204,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198,379.64 : 7,799,340.06 = 2,802,454.60 : x
  2. Step 2: Convert to fraction form
    5,198,379.64/7,799,340.06 = 2,802,454.60/x
  3. Step 3: Cross multiply
    5,198,379.64x = 7,799,340.06 × 2,802,454.60
  4. Step 4: Simplify right side
    5,198,379.64x = 21,857,296,428,111.28
  5. Step 5: Solve for x
    x = 21,857,296,428,111.28/5,198,379.64
  6. Step 6: Final answer
    x = 4,204,636.43

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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.