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Finding the Fourth Proportional to 5,085.99, 7,015.80 and 2,961.27

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Solution

The fourth proportional to 5,085.99, 7,015.80 and 2,961.27 is: 4,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.99 : 7,015.80 = 2,961.27 : x
  2. Step 2: Convert to fraction form
    5,085.99/7,015.80 = 2,961.27/x
  3. Step 3: Cross multiply
    5,085.99x = 7,015.80 × 2,961.27
  4. Step 4: Simplify right side
    5,085.99x = 20,775,678.07
  5. Step 5: Solve for x
    x = 20,775,678.07/5,085.99
  6. Step 6: Final answer
    x = 4,084.88

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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.