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Finding the Fourth Proportional to 18,805.45, 25,946.27 and 14,814.17

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Solution

The fourth proportional to 18,805.45, 25,946.27 and 14,814.17 is: 20,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.45 : 25,946.27 = 14,814.17 : x
  2. Step 2: Convert to fraction form
    18,805.45/25,946.27 = 14,814.17/x
  3. Step 3: Cross multiply
    18,805.45x = 25,946.27 × 14,814.17
  4. Step 4: Simplify right side
    18,805.45x = 384,372,445.44
  5. Step 5: Solve for x
    x = 384,372,445.44/18,805.45
  6. Step 6: Final answer
    x = 20,439.42

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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.