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Finding the Fourth Proportional to 13,610.70, 20,376.42 and 10,116.20

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Solution

The fourth proportional to 13,610.70, 20,376.42 and 10,116.20 is: 15,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.70 : 20,376.42 = 10,116.20 : x
  2. Step 2: Convert to fraction form
    13,610.70/20,376.42 = 10,116.20/x
  3. Step 3: Cross multiply
    13,610.70x = 20,376.42 × 10,116.20
  4. Step 4: Simplify right side
    13,610.70x = 206,131,940.00
  5. Step 5: Solve for x
    x = 206,131,940.00/13,610.70
  6. Step 6: Final answer
    x = 15,144.84

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1.5x scale

Why These Related Problems?

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