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Finding the Fourth Proportional to 13,610.70, 20,422.53 and 10,694.70

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Solution

The fourth proportional to 13,610.70, 20,422.53 and 10,694.70 is: 16,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.70 : 20,422.53 = 10,694.70 : x
  2. Step 2: Convert to fraction form
    13,610.70/20,422.53 = 10,694.70/x
  3. Step 3: Cross multiply
    13,610.70x = 20,422.53 × 10,694.70
  4. Step 4: Simplify right side
    13,610.70x = 218,412,831.59
  5. Step 5: Solve for x
    x = 218,412,831.59/13,610.70
  6. Step 6: Final answer
    x = 16,047.14

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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.