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Finding the Fourth Proportional to 27,096.80, 40,572.30 and 21,216.20

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Solution

The fourth proportional to 27,096.80, 40,572.30 and 21,216.20 is: 31,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,096.80 : 40,572.30 = 21,216.20 : x
  2. Step 2: Convert to fraction form
    27,096.80/40,572.30 = 21,216.20/x
  3. Step 3: Cross multiply
    27,096.80x = 40,572.30 × 21,216.20
  4. Step 4: Simplify right side
    27,096.80x = 860,790,031.26
  5. Step 5: Solve for x
    x = 860,790,031.26/27,096.80
  6. Step 6: Final answer
    x = 31,767.22

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.