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Finding the Fourth Proportional to 13,450.59, 20,169.90 and 5,653.89

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Solution

The fourth proportional to 13,450.59, 20,169.90 and 5,653.89 is: 8,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.59 : 20,169.90 = 5,653.89 : x
  2. Step 2: Convert to fraction form
    13,450.59/20,169.90 = 5,653.89/x
  3. Step 3: Cross multiply
    13,450.59x = 20,169.90 × 5,653.89
  4. Step 4: Simplify right side
    13,450.59x = 114,038,395.91
  5. Step 5: Solve for x
    x = 114,038,395.91/13,450.59
  6. Step 6: Final answer
    x = 8,478.32

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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.