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Finding the Fourth Proportional to 3,865.95, 5,799.20 and 1,674.81

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Solution

The fourth proportional to 3,865.95, 5,799.20 and 1,674.81 is: 2,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.95 : 5,799.20 = 1,674.81 : x
  2. Step 2: Convert to fraction form
    3,865.95/5,799.20 = 1,674.81/x
  3. Step 3: Cross multiply
    3,865.95x = 5,799.20 × 1,674.81
  4. Step 4: Simplify right side
    3,865.95x = 9,712,549.78
  5. Step 5: Solve for x
    x = 9,712,549.78/3,865.95
  6. Step 6: Final answer
    x = 2,512.33

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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.