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Finding the Fourth Proportional to 17,311.56, 25,971.60 and 4,999.56

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Solution

The fourth proportional to 17,311.56, 25,971.60 and 4,999.56 is: 7,500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,311.56 : 25,971.60 = 4,999.56 : x
  2. Step 2: Convert to fraction form
    17,311.56/25,971.60 = 4,999.56/x
  3. Step 3: Cross multiply
    17,311.56x = 25,971.60 × 4,999.56
  4. Step 4: Simplify right side
    17,311.56x = 129,846,572.50
  5. Step 5: Solve for x
    x = 129,846,572.50/17,311.56
  6. Step 6: Final answer
    x = 7,500.57

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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.