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Finding the Fourth Proportional to 667,628.93, 998,582.30 and 619,168.77

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Solution

The fourth proportional to 667,628.93, 998,582.30 and 619,168.77 is: 926,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,628.93 : 998,582.30 = 619,168.77 : x
  2. Step 2: Convert to fraction form
    667,628.93/998,582.30 = 619,168.77/x
  3. Step 3: Cross multiply
    667,628.93x = 998,582.30 × 619,168.77
  4. Step 4: Simplify right side
    667,628.93x = 618,290,969,916.13
  5. Step 5: Solve for x
    x = 618,290,969,916.13/667,628.93
  6. Step 6: Final answer
    x = 926,099.73

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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.