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Finding the Fourth Proportional to 18,914.90, 28,353.78 and 7,059.98

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Solution

The fourth proportional to 18,914.90, 28,353.78 and 7,059.98 is: 10,583.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.90 : 28,353.78 = 7,059.98 : x
  2. Step 2: Convert to fraction form
    18,914.90/28,353.78 = 7,059.98/x
  3. Step 3: Cross multiply
    18,914.90x = 28,353.78 × 7,059.98
  4. Step 4: Simplify right side
    18,914.90x = 200,177,119.72
  5. Step 5: Solve for x
    x = 200,177,119.72/18,914.90
  6. Step 6: Final answer
    x = 10,583.04

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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.