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Finding the Fourth Proportional to 5,858.70, 8,789.70 and 3,084.72

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Solution

The fourth proportional to 5,858.70, 8,789.70 and 3,084.72 is: 4,627.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.70 : 8,789.70 = 3,084.72 : x
  2. Step 2: Convert to fraction form
    5,858.70/8,789.70 = 3,084.72/x
  3. Step 3: Cross multiply
    5,858.70x = 8,789.70 × 3,084.72
  4. Step 4: Simplify right side
    5,858.70x = 27,113,763.38
  5. Step 5: Solve for x
    x = 27,113,763.38/5,858.70
  6. Step 6: Final answer
    x = 4,627.95

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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.