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Finding the Fourth Proportional to 18,318.54, 27,472.79 and 7,224.98

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Solution

The fourth proportional to 18,318.54, 27,472.79 and 7,224.98 is: 10,835.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.54 : 27,472.79 = 7,224.98 : x
  2. Step 2: Convert to fraction form
    18,318.54/27,472.79 = 7,224.98/x
  3. Step 3: Cross multiply
    18,318.54x = 27,472.79 × 7,224.98
  4. Step 4: Simplify right side
    18,318.54x = 198,490,184.81
  5. Step 5: Solve for x
    x = 198,490,184.81/18,318.54
  6. Step 6: Final answer
    x = 10,835.48

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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.