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Finding the Fourth Proportional to 18,896.73, 28,343.95 and 7,048.22

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Solution

The fourth proportional to 18,896.73, 28,343.95 and 7,048.22 is: 10,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.73 : 28,343.95 = 7,048.22 : x
  2. Step 2: Convert to fraction form
    18,896.73/28,343.95 = 7,048.22/x
  3. Step 3: Cross multiply
    18,896.73x = 28,343.95 × 7,048.22
  4. Step 4: Simplify right side
    18,896.73x = 199,774,342.22
  5. Step 5: Solve for x
    x = 199,774,342.22/18,896.73
  6. Step 6: Final answer
    x = 10,571.90

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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.