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Finding the Fourth Proportional to 13,703.60, 20,555.40 and 4,469.60

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Solution

The fourth proportional to 13,703.60, 20,555.40 and 4,469.60 is: 6,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.60 : 20,555.40 = 4,469.60 : x
  2. Step 2: Convert to fraction form
    13,703.60/20,555.40 = 4,469.60/x
  3. Step 3: Cross multiply
    13,703.60x = 20,555.40 × 4,469.60
  4. Step 4: Simplify right side
    13,703.60x = 91,874,415.84
  5. Step 5: Solve for x
    x = 91,874,415.84/13,703.60
  6. Step 6: Final answer
    x = 6,704.40

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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.