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Finding the Fourth Proportional to 18,833.56, 28,247.34 and 4,983.64

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Solution

The fourth proportional to 18,833.56, 28,247.34 and 4,983.64 is: 7,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.56 : 28,247.34 = 4,983.64 : x
  2. Step 2: Convert to fraction form
    18,833.56/28,247.34 = 4,983.64/x
  3. Step 3: Cross multiply
    18,833.56x = 28,247.34 × 4,983.64
  4. Step 4: Simplify right side
    18,833.56x = 140,774,573.52
  5. Step 5: Solve for x
    x = 140,774,573.52/18,833.56
  6. Step 6: Final answer
    x = 7,474.67

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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.