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Finding the Fourth Proportional to 638,361.88, 957,682.98 and 189,117.92

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Solution

The fourth proportional to 638,361.88, 957,682.98 and 189,117.92 is: 283,718.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,361.88 : 957,682.98 = 189,117.92 : x
  2. Step 2: Convert to fraction form
    638,361.88/957,682.98 = 189,117.92/x
  3. Step 3: Cross multiply
    638,361.88x = 957,682.98 × 189,117.92
  4. Step 4: Simplify right side
    638,361.88x = 181,115,015,591.21
  5. Step 5: Solve for x
    x = 181,115,015,591.21/638,361.88
  6. Step 6: Final answer
    x = 283,718.41

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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.