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Finding the Fourth Proportional to 27,292.96, 40,900.96 and 21,721.52

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Solution

The fourth proportional to 27,292.96, 40,900.96 and 21,721.52 is: 32,551.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,292.96 : 40,900.96 = 21,721.52 : x
  2. Step 2: Convert to fraction form
    27,292.96/40,900.96 = 21,721.52/x
  3. Step 3: Cross multiply
    27,292.96x = 40,900.96 × 21,721.52
  4. Step 4: Simplify right side
    27,292.96x = 888,431,020.66
  5. Step 5: Solve for x
    x = 888,431,020.66/27,292.96
  6. Step 6: Final answer
    x = 32,551.66

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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.