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Finding the Fourth Proportional to 2,475.85, 3,713.68 and 744.43

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Solution

The fourth proportional to 2,475.85, 3,713.68 and 744.43 is: 1,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.85 : 3,713.68 = 744.43 : x
  2. Step 2: Convert to fraction form
    2,475.85/3,713.68 = 744.43/x
  3. Step 3: Cross multiply
    2,475.85x = 3,713.68 × 744.43
  4. Step 4: Simplify right side
    2,475.85x = 2,764,574.80
  5. Step 5: Solve for x
    x = 2,764,574.80/2,475.85
  6. Step 6: Final answer
    x = 1,116.62

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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.