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Finding the Fourth Proportional to 16,995.69, 25,503.80 and 12,105.99

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Solution

The fourth proportional to 16,995.69, 25,503.80 and 12,105.99 is: 18,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,995.69 : 25,503.80 = 12,105.99 : x
  2. Step 2: Convert to fraction form
    16,995.69/25,503.80 = 12,105.99/x
  3. Step 3: Cross multiply
    16,995.69x = 25,503.80 × 12,105.99
  4. Step 4: Simplify right side
    16,995.69x = 308,748,687.23
  5. Step 5: Solve for x
    x = 308,748,687.23/16,995.69
  6. Step 6: Final answer
    x = 18,166.29

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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.