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Finding the Fourth Proportional to 2,583.54, 3,873.63 and 939.78

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Solution

The fourth proportional to 2,583.54, 3,873.63 and 939.78 is: 1,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,583.54 : 3,873.63 = 939.78 : x
  2. Step 2: Convert to fraction form
    2,583.54/3,873.63 = 939.78/x
  3. Step 3: Cross multiply
    2,583.54x = 3,873.63 × 939.78
  4. Step 4: Simplify right side
    2,583.54x = 3,640,360.00
  5. Step 5: Solve for x
    x = 3,640,360.00/2,583.54
  6. Step 6: Final answer
    x = 1,409.06

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1.5x scale

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.