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Finding the Fourth Proportional to 18,706.06, 28,059.90 and 6,227.20

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Solution

The fourth proportional to 18,706.06, 28,059.90 and 6,227.20 is: 9,341.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.06 : 28,059.90 = 6,227.20 : x
  2. Step 2: Convert to fraction form
    18,706.06/28,059.90 = 6,227.20/x
  3. Step 3: Cross multiply
    18,706.06x = 28,059.90 × 6,227.20
  4. Step 4: Simplify right side
    18,706.06x = 174,734,609.28
  5. Step 5: Solve for x
    x = 174,734,609.28/18,706.06
  6. Step 6: Final answer
    x = 9,341.07

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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.