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Finding the Fourth Proportional to 638,137.62, 957,195.63 and 188,856

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Solution

The fourth proportional to 638,137.62, 957,195.63 and 188,856 is: 283,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,137.62 : 957,195.63 = 188,856 : x
  2. Step 2: Convert to fraction form
    638,137.62/957,195.63 = 188,856/x
  3. Step 3: Cross multiply
    638,137.62x = 957,195.63 × 188,856
  4. Step 4: Simplify right side
    638,137.62x = 180,772,137,899.28
  5. Step 5: Solve for x
    x = 180,772,137,899.28/638,137.62
  6. Step 6: Final answer
    x = 283,280.80

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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.