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Finding the Fourth Proportional to 18,833.65, 28,251.56 and 4,983.01

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Solution

The fourth proportional to 18,833.65, 28,251.56 and 4,983.01 is: 7,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.65 : 28,251.56 = 4,983.01 : x
  2. Step 2: Convert to fraction form
    18,833.65/28,251.56 = 4,983.01/x
  3. Step 3: Cross multiply
    18,833.65x = 28,251.56 × 4,983.01
  4. Step 4: Simplify right side
    18,833.65x = 140,777,806.00
  5. Step 5: Solve for x
    x = 140,777,806.00/18,833.65
  6. Step 6: Final answer
    x = 7,474.80

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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.