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Finding the Fourth Proportional to 1,119.37, 1,544.67 and 622.02

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Solution

The fourth proportional to 1,119.37, 1,544.67 and 622.02 is: 858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.37 : 1,544.67 = 622.02 : x
  2. Step 2: Convert to fraction form
    1,119.37/1,544.67 = 622.02/x
  3. Step 3: Cross multiply
    1,119.37x = 1,544.67 × 622.02
  4. Step 4: Simplify right side
    1,119.37x = 960,815.63
  5. Step 5: Solve for x
    x = 960,815.63/1,119.37
  6. Step 6: Final answer
    x = 858.35

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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.