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Finding the Fourth Proportional to 1,993,942.87, 2,751,877.88 and 1,122,805.69

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Solution

The fourth proportional to 1,993,942.87, 2,751,877.88 and 1,122,805.69 is: 1,549,605.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,942.87 : 2,751,877.88 = 1,122,805.69 : x
  2. Step 2: Convert to fraction form
    1,993,942.87/2,751,877.88 = 1,122,805.69/x
  3. Step 3: Cross multiply
    1,993,942.87x = 2,751,877.88 × 1,122,805.69
  4. Step 4: Simplify right side
    1,993,942.87x = 3,089,824,136,235.11
  5. Step 5: Solve for x
    x = 3,089,824,136,235.11/1,993,942.87
  6. Step 6: Final answer
    x = 1,549,605.15

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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.