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Finding the Fourth Proportional to 17,990.85, 26,986.26 and 4,843.24

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Solution

The fourth proportional to 17,990.85, 26,986.26 and 4,843.24 is: 7,264.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.85 : 26,986.26 = 4,843.24 : x
  2. Step 2: Convert to fraction form
    17,990.85/26,986.26 = 4,843.24/x
  3. Step 3: Cross multiply
    17,990.85x = 26,986.26 × 4,843.24
  4. Step 4: Simplify right side
    17,990.85x = 130,700,842.20
  5. Step 5: Solve for x
    x = 130,700,842.20/17,990.85
  6. Step 6: Final answer
    x = 7,264.85

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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.