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Finding the Fourth Proportional to 18,512.36, 27,773.92 and 6,665.92

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Solution

The fourth proportional to 18,512.36, 27,773.92 and 6,665.92 is: 10,000.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.36 : 27,773.92 = 6,665.92 : x
  2. Step 2: Convert to fraction form
    18,512.36/27,773.92 = 6,665.92/x
  3. Step 3: Cross multiply
    18,512.36x = 27,773.92 × 6,665.92
  4. Step 4: Simplify right side
    18,512.36x = 185,138,728.81
  5. Step 5: Solve for x
    x = 185,138,728.81/18,512.36
  6. Step 6: Final answer
    x = 10,000.82

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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.