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Finding the Fourth Proportional to 1,993,158.60, 2,989,737.90 and 1,394,795.40

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Solution

The fourth proportional to 1,993,158.60, 2,989,737.90 and 1,394,795.40 is: 2,092,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,158.60 : 2,989,737.90 = 1,394,795.40 : x
  2. Step 2: Convert to fraction form
    1,993,158.60/2,989,737.90 = 1,394,795.40/x
  3. Step 3: Cross multiply
    1,993,158.60x = 2,989,737.90 × 1,394,795.40
  4. Step 4: Simplify right side
    1,993,158.60x = 4,170,072,670,125.66
  5. Step 5: Solve for x
    x = 4,170,072,670,125.66/1,993,158.60
  6. Step 6: Final answer
    x = 2,092,193.10

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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.