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Finding the Fourth Proportional to 1,993,670.55, 2,990,505.83 and 1,993,670.55

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Solution

The fourth proportional to 1,993,670.55, 2,990,505.83 and 1,993,670.55 is: 2,990,505.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,670.55 : 2,990,505.83 = 1,993,670.55 : x
  2. Step 2: Convert to fraction form
    1,993,670.55/2,990,505.83 = 1,993,670.55/x
  3. Step 3: Cross multiply
    1,993,670.55x = 2,990,505.83 × 1,993,670.55
  4. Step 4: Simplify right side
    1,993,670.55x = 5,962,083,392,905.95
  5. Step 5: Solve for x
    x = 5,962,083,392,905.95/1,993,670.55
  6. Step 6: Final answer
    x = 2,990,505.83

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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.