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Finding the Fourth Proportional to 13,451.40, 20,153.92 and 10,495.68

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Solution

The fourth proportional to 13,451.40, 20,153.92 and 10,495.68 is: 15,725.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.40 : 20,153.92 = 10,495.68 : x
  2. Step 2: Convert to fraction form
    13,451.40/20,153.92 = 10,495.68/x
  3. Step 3: Cross multiply
    13,451.40x = 20,153.92 × 10,495.68
  4. Step 4: Simplify right side
    13,451.40x = 211,529,095.07
  5. Step 5: Solve for x
    x = 211,529,095.07/13,451.40
  6. Step 6: Final answer
    x = 15,725.43

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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.