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Finding the Fourth Proportional to 18,805.91, 25,951.19 and 10,847.66

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Solution

The fourth proportional to 18,805.91, 25,951.19 and 10,847.66 is: 14,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.91 : 25,951.19 = 10,847.66 : x
  2. Step 2: Convert to fraction form
    18,805.91/25,951.19 = 10,847.66/x
  3. Step 3: Cross multiply
    18,805.91x = 25,951.19 × 10,847.66
  4. Step 4: Simplify right side
    18,805.91x = 281,509,501.72
  5. Step 5: Solve for x
    x = 281,509,501.72/18,805.91
  6. Step 6: Final answer
    x = 14,969.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.