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Finding the Fourth Proportional to 18,492.80, 27,739.20 and 6,803.60

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Solution

The fourth proportional to 18,492.80, 27,739.20 and 6,803.60 is: 10,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.80 : 27,739.20 = 6,803.60 : x
  2. Step 2: Convert to fraction form
    18,492.80/27,739.20 = 6,803.60/x
  3. Step 3: Cross multiply
    18,492.80x = 27,739.20 × 6,803.60
  4. Step 4: Simplify right side
    18,492.80x = 188,726,421.12
  5. Step 5: Solve for x
    x = 188,726,421.12/18,492.80
  6. Step 6: Final answer
    x = 10,205.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.