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Finding the Fourth Proportional to 638,500.08, 957,890.28 and 189,255.60

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Solution

The fourth proportional to 638,500.08, 957,890.28 and 189,255.60 is: 283,924.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,500.08 : 957,890.28 = 189,255.60 : x
  2. Step 2: Convert to fraction form
    638,500.08/957,890.28 = 189,255.60/x
  3. Step 3: Cross multiply
    638,500.08x = 957,890.28 × 189,255.60
  4. Step 4: Simplify right side
    638,500.08x = 181,286,099,675.57
  5. Step 5: Solve for x
    x = 181,286,099,675.57/638,500.08
  6. Step 6: Final answer
    x = 283,924.94

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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.