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Finding the Fourth Proportional to 11,841.80, 17,772.30 and 11,457.80

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Solution

The fourth proportional to 11,841.80, 17,772.30 and 11,457.80 is: 17,195.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,841.80 : 17,772.30 = 11,457.80 : x
  2. Step 2: Convert to fraction form
    11,841.80/17,772.30 = 11,457.80/x
  3. Step 3: Cross multiply
    11,841.80x = 17,772.30 × 11,457.80
  4. Step 4: Simplify right side
    11,841.80x = 203,631,458.94
  5. Step 5: Solve for x
    x = 203,631,458.94/11,841.80
  6. Step 6: Final answer
    x = 17,195.99

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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.