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Finding the Fourth Proportional to 1,993,807.60, 2,990,711.40 and 1,839,842.80

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Solution

The fourth proportional to 1,993,807.60, 2,990,711.40 and 1,839,842.80 is: 2,759,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,807.60 : 2,990,711.40 = 1,839,842.80 : x
  2. Step 2: Convert to fraction form
    1,993,807.60/2,990,711.40 = 1,839,842.80/x
  3. Step 3: Cross multiply
    1,993,807.60x = 2,990,711.40 × 1,839,842.80
  4. Step 4: Simplify right side
    1,993,807.60x = 5,502,438,836,167.92
  5. Step 5: Solve for x
    x = 5,502,438,836,167.92/1,993,807.60
  6. Step 6: Final answer
    x = 2,759,764.20

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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.