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Finding the Fourth Proportional to 17,311.80, 25,967.22 and 4,999.80

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Solution

The fourth proportional to 17,311.80, 25,967.22 and 4,999.80 is: 7,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,311.80 : 25,967.22 = 4,999.80 : x
  2. Step 2: Convert to fraction form
    17,311.80/25,967.22 = 4,999.80/x
  3. Step 3: Cross multiply
    17,311.80x = 25,967.22 × 4,999.80
  4. Step 4: Simplify right side
    17,311.80x = 129,830,906.56
  5. Step 5: Solve for x
    x = 129,830,906.56/17,311.80
  6. Step 6: Final answer
    x = 7,499.56

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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.