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Finding the Fourth Proportional to 18,703.56, 28,059.92 and 6,223.56

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Solution

The fourth proportional to 18,703.56, 28,059.92 and 6,223.56 is: 9,336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.56 : 28,059.92 = 6,223.56 : x
  2. Step 2: Convert to fraction form
    18,703.56/28,059.92 = 6,223.56/x
  3. Step 3: Cross multiply
    18,703.56x = 28,059.92 × 6,223.56
  4. Step 4: Simplify right side
    18,703.56x = 174,632,564.60
  5. Step 5: Solve for x
    x = 174,632,564.60/18,703.56
  6. Step 6: Final answer
    x = 9,336.86

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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.