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Finding the Fourth Proportional to 1,174.60, 1,621.74 and 1,049.86

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Solution

The fourth proportional to 1,174.60, 1,621.74 and 1,049.86 is: 1,449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.60 : 1,621.74 = 1,049.86 : x
  2. Step 2: Convert to fraction form
    1,174.60/1,621.74 = 1,049.86/x
  3. Step 3: Cross multiply
    1,174.60x = 1,621.74 × 1,049.86
  4. Step 4: Simplify right side
    1,174.60x = 1,702,599.96
  5. Step 5: Solve for x
    x = 1,702,599.96/1,174.60
  6. Step 6: Final answer
    x = 1,449.51

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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.