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Finding the Fourth Proportional to 27,898.80, 41,815.80 and 11,250.60

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Solution

The fourth proportional to 27,898.80, 41,815.80 and 11,250.60 is: 16,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,898.80 : 41,815.80 = 11,250.60 : x
  2. Step 2: Convert to fraction form
    27,898.80/41,815.80 = 11,250.60/x
  3. Step 3: Cross multiply
    27,898.80x = 41,815.80 × 11,250.60
  4. Step 4: Simplify right side
    27,898.80x = 470,452,839.48
  5. Step 5: Solve for x
    x = 470,452,839.48/27,898.80
  6. Step 6: Final answer
    x = 16,862.83

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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.