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Finding the Fourth Proportional to 23,990.72, 35,985.92 and 18,453.92

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Solution

The fourth proportional to 23,990.72, 35,985.92 and 18,453.92 is: 27,680.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,990.72 : 35,985.92 = 18,453.92 : x
  2. Step 2: Convert to fraction form
    23,990.72/35,985.92 = 18,453.92/x
  3. Step 3: Cross multiply
    23,990.72x = 35,985.92 × 18,453.92
  4. Step 4: Simplify right side
    23,990.72x = 664,081,288.81
  5. Step 5: Solve for x
    x = 664,081,288.81/23,990.72
  6. Step 6: Final answer
    x = 27,680.76

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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.