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Finding the Fourth Proportional to 1,993,840.60, 2,990,760.90 and 1,839,875.80

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Solution

The fourth proportional to 1,993,840.60, 2,990,760.90 and 1,839,875.80 is: 2,759,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,840.60 : 2,990,760.90 = 1,839,875.80 : x
  2. Step 2: Convert to fraction form
    1,993,840.60/2,990,760.90 = 1,839,875.80/x
  3. Step 3: Cross multiply
    1,993,840.60x = 2,990,760.90 × 1,839,875.80
  4. Step 4: Simplify right side
    1,993,840.60x = 5,502,628,603,496.22
  5. Step 5: Solve for x
    x = 5,502,628,603,496.22/1,993,840.60
  6. Step 6: Final answer
    x = 2,759,813.70

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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.