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Finding the Fourth Proportional to 18,296.55, 27,452.79 and 7,211.30

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Solution

The fourth proportional to 18,296.55, 27,452.79 and 7,211.30 is: 10,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,296.55 : 27,452.79 = 7,211.30 : x
  2. Step 2: Convert to fraction form
    18,296.55/27,452.79 = 7,211.30/x
  3. Step 3: Cross multiply
    18,296.55x = 27,452.79 × 7,211.30
  4. Step 4: Simplify right side
    18,296.55x = 197,970,167.26
  5. Step 5: Solve for x
    x = 197,970,167.26/18,296.55
  6. Step 6: Final answer
    x = 10,820.08

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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.