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Finding the Fourth Proportional to 17,697.89, 26,546.22 and 5,218.11

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Solution

The fourth proportional to 17,697.89, 26,546.22 and 5,218.11 is: 7,826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,697.89 : 26,546.22 = 5,218.11 : x
  2. Step 2: Convert to fraction form
    17,697.89/26,546.22 = 5,218.11/x
  3. Step 3: Cross multiply
    17,697.89x = 26,546.22 × 5,218.11
  4. Step 4: Simplify right side
    17,697.89x = 138,521,096.04
  5. Step 5: Solve for x
    x = 138,521,096.04/17,697.89
  6. Step 6: Final answer
    x = 7,826.98

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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.