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Finding the Fourth Proportional to 22,188.90, 33,289.56 and 7,407.48

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Solution

The fourth proportional to 22,188.90, 33,289.56 and 7,407.48 is: 11,113.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.90 : 33,289.56 = 7,407.48 : x
  2. Step 2: Convert to fraction form
    22,188.90/33,289.56 = 7,407.48/x
  3. Step 3: Cross multiply
    22,188.90x = 33,289.56 × 7,407.48
  4. Step 4: Simplify right side
    22,188.90x = 246,591,749.91
  5. Step 5: Solve for x
    x = 246,591,749.91/22,188.90
  6. Step 6: Final answer
    x = 11,113.29

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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.