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Finding the Fourth Proportional to 34,375.50, 47,438.19 and 19,471.50

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Solution

The fourth proportional to 34,375.50, 47,438.19 and 19,471.50 is: 26,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,375.50 : 47,438.19 = 19,471.50 : x
  2. Step 2: Convert to fraction form
    34,375.50/47,438.19 = 19,471.50/x
  3. Step 3: Cross multiply
    34,375.50x = 47,438.19 × 19,471.50
  4. Step 4: Simplify right side
    34,375.50x = 923,692,716.59
  5. Step 5: Solve for x
    x = 923,692,716.59/34,375.50
  6. Step 6: Final answer
    x = 26,870.67

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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.