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Finding the Fourth Proportional to 11,026.76, 16,520.88 and 9,189.68

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Solution

The fourth proportional to 11,026.76, 16,520.88 and 9,189.68 is: 13,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,026.76 : 16,520.88 = 9,189.68 : x
  2. Step 2: Convert to fraction form
    11,026.76/16,520.88 = 9,189.68/x
  3. Step 3: Cross multiply
    11,026.76x = 16,520.88 × 9,189.68
  4. Step 4: Simplify right side
    11,026.76x = 151,821,600.52
  5. Step 5: Solve for x
    x = 151,821,600.52/11,026.76
  6. Step 6: Final answer
    x = 13,768.47

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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.