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Finding the Fourth Proportional to 5,757.70, 8,636.34 and 1,862

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Solution

The fourth proportional to 5,757.70, 8,636.34 and 1,862 is: 2,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.70 : 8,636.34 = 1,862 : x
  2. Step 2: Convert to fraction form
    5,757.70/8,636.34 = 1,862/x
  3. Step 3: Cross multiply
    5,757.70x = 8,636.34 × 1,862
  4. Step 4: Simplify right side
    5,757.70x = 16,080,865.08
  5. Step 5: Solve for x
    x = 16,080,865.08/5,757.70
  6. Step 6: Final answer
    x = 2,792.93

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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.