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Finding the Fourth Proportional to 638,311.89, 957,607.95 and 189,067.94

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Solution

The fourth proportional to 638,311.89, 957,607.95 and 189,067.94 is: 283,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,311.89 : 957,607.95 = 189,067.94 : x
  2. Step 2: Convert to fraction form
    638,311.89/957,607.95 = 189,067.94/x
  3. Step 3: Cross multiply
    638,311.89x = 957,607.95 × 189,067.94
  4. Step 4: Simplify right side
    638,311.89x = 181,052,961,946.12
  5. Step 5: Solve for x
    x = 181,052,961,946.12/638,311.89
  6. Step 6: Final answer
    x = 283,643.41

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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.