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Finding the Fourth Proportional to 6,461,891.85, 8,918,930.31 and 4,016,349.82

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Solution

The fourth proportional to 6,461,891.85, 8,918,930.31 and 4,016,349.82 is: 5,543,507.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,461,891.85 : 8,918,930.31 = 4,016,349.82 : x
  2. Step 2: Convert to fraction form
    6,461,891.85/8,918,930.31 = 4,016,349.82/x
  3. Step 3: Cross multiply
    6,461,891.85x = 8,918,930.31 × 4,016,349.82
  4. Step 4: Simplify right side
    6,461,891.85x = 35,821,544,145,161.05
  5. Step 5: Solve for x
    x = 35,821,544,145,161.05/6,461,891.85
  6. Step 6: Final answer
    x = 5,543,507.22

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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.