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Finding the Fourth Proportional to 18,898.54, 28,346.67 and 7,049.98

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Solution

The fourth proportional to 18,898.54, 28,346.67 and 7,049.98 is: 10,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.54 : 28,346.67 = 7,049.98 : x
  2. Step 2: Convert to fraction form
    18,898.54/28,346.67 = 7,049.98/x
  3. Step 3: Cross multiply
    18,898.54x = 28,346.67 × 7,049.98
  4. Step 4: Simplify right side
    18,898.54x = 199,843,456.57
  5. Step 5: Solve for x
    x = 199,843,456.57/18,898.54
  6. Step 6: Final answer
    x = 10,574.54

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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.