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Finding the Fourth Proportional to 13,015.80, 18,200.25 and 13,015.80

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Solution

The fourth proportional to 13,015.80, 18,200.25 and 13,015.80 is: 18,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.80 : 18,200.25 = 13,015.80 : x
  2. Step 2: Convert to fraction form
    13,015.80/18,200.25 = 13,015.80/x
  3. Step 3: Cross multiply
    13,015.80x = 18,200.25 × 13,015.80
  4. Step 4: Simplify right side
    13,015.80x = 236,890,813.95
  5. Step 5: Solve for x
    x = 236,890,813.95/13,015.80
  6. Step 6: Final answer
    x = 18,200.25

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.