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Finding the Fourth Proportional to 18,814.60, 28,205.70 and 16,846.30

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Solution

The fourth proportional to 18,814.60, 28,205.70 and 16,846.30 is: 25,254.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.60 : 28,205.70 = 16,846.30 : x
  2. Step 2: Convert to fraction form
    18,814.60/28,205.70 = 16,846.30/x
  3. Step 3: Cross multiply
    18,814.60x = 28,205.70 × 16,846.30
  4. Step 4: Simplify right side
    18,814.60x = 475,161,683.91
  5. Step 5: Solve for x
    x = 475,161,683.91/18,814.60
  6. Step 6: Final answer
    x = 25,254.94

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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.