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Finding the Fourth Proportional to 491,440.99, 678,210.38 and 276,594.97

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Solution

The fourth proportional to 491,440.99, 678,210.38 and 276,594.97 is: 381,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,440.99 : 678,210.38 = 276,594.97 : x
  2. Step 2: Convert to fraction form
    491,440.99/678,210.38 = 276,594.97/x
  3. Step 3: Cross multiply
    491,440.99x = 678,210.38 × 276,594.97
  4. Step 4: Simplify right side
    491,440.99x = 187,589,577,174.80
  5. Step 5: Solve for x
    x = 187,589,577,174.80/491,440.99
  6. Step 6: Final answer
    x = 381,713.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.