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Finding the Fourth Proportional to 13,954.91, 20,932.36 and 6,162.17

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Solution

The fourth proportional to 13,954.91, 20,932.36 and 6,162.17 is: 9,243.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.91 : 20,932.36 = 6,162.17 : x
  2. Step 2: Convert to fraction form
    13,954.91/20,932.36 = 6,162.17/x
  3. Step 3: Cross multiply
    13,954.91x = 20,932.36 × 6,162.17
  4. Step 4: Simplify right side
    13,954.91x = 128,988,760.82
  5. Step 5: Solve for x
    x = 128,988,760.82/13,954.91
  6. Step 6: Final answer
    x = 9,243.25

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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.