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Finding the Fourth Proportional to 19,908.70, 27,474.15 and 10,955.98

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Solution

The fourth proportional to 19,908.70, 27,474.15 and 10,955.98 is: 15,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.70 : 27,474.15 = 10,955.98 : x
  2. Step 2: Convert to fraction form
    19,908.70/27,474.15 = 10,955.98/x
  3. Step 3: Cross multiply
    19,908.70x = 27,474.15 × 10,955.98
  4. Step 4: Simplify right side
    19,908.70x = 301,006,237.92
  5. Step 5: Solve for x
    x = 301,006,237.92/19,908.70
  6. Step 6: Final answer
    x = 15,119.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.