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Finding the Fourth Proportional to 3,348,993.56, 5,017,151.67 and 1,978,669.22

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Solution

The fourth proportional to 3,348,993.56, 5,017,151.67 and 1,978,669.22 is: 2,964,258.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,348,993.56 : 5,017,151.67 = 1,978,669.22 : x
  2. Step 2: Convert to fraction form
    3,348,993.56/5,017,151.67 = 1,978,669.22/x
  3. Step 3: Cross multiply
    3,348,993.56x = 5,017,151.67 × 1,978,669.22
  4. Step 4: Simplify right side
    3,348,993.56x = 9,927,283,581,500.60
  5. Step 5: Solve for x
    x = 9,927,283,581,500.60/3,348,993.56
  6. Step 6: Final answer
    x = 2,964,258.79

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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.