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Finding the Fourth Proportional to 3,798.79, 5,236.58 and 2,958.01

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Solution

The fourth proportional to 3,798.79, 5,236.58 and 2,958.01 is: 4,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.79 : 5,236.58 = 2,958.01 : x
  2. Step 2: Convert to fraction form
    3,798.79/5,236.58 = 2,958.01/x
  3. Step 3: Cross multiply
    3,798.79x = 5,236.58 × 2,958.01
  4. Step 4: Simplify right side
    3,798.79x = 15,489,850.31
  5. Step 5: Solve for x
    x = 15,489,850.31/3,798.79
  6. Step 6: Final answer
    x = 4,077.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.