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Finding the Fourth Proportional to 27,192.68, 40,781.18 and 7,471.88

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Solution

The fourth proportional to 27,192.68, 40,781.18 and 7,471.88 is: 11,205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,192.68 : 40,781.18 = 7,471.88 : x
  2. Step 2: Convert to fraction form
    27,192.68/40,781.18 = 7,471.88/x
  3. Step 3: Cross multiply
    27,192.68x = 40,781.18 × 7,471.88
  4. Step 4: Simplify right side
    27,192.68x = 304,712,083.22
  5. Step 5: Solve for x
    x = 304,712,083.22/27,192.68
  6. Step 6: Final answer
    x = 11,205.67

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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.