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Finding the Fourth Proportional to 19,427.70, 29,163.15 and 10,679.70

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Solution

The fourth proportional to 19,427.70, 29,163.15 and 10,679.70 is: 16,031.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,427.70 : 29,163.15 = 10,679.70 : x
  2. Step 2: Convert to fraction form
    19,427.70/29,163.15 = 10,679.70/x
  3. Step 3: Cross multiply
    19,427.70x = 29,163.15 × 10,679.70
  4. Step 4: Simplify right side
    19,427.70x = 311,453,693.06
  5. Step 5: Solve for x
    x = 311,453,693.06/19,427.70
  6. Step 6: Final answer
    x = 16,031.42

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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.