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Finding the Fourth Proportional to 27,242.88, 40,866.66 and 7,521.43

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Solution

The fourth proportional to 27,242.88, 40,866.66 and 7,521.43 is: 11,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,242.88 : 40,866.66 = 7,521.43 : x
  2. Step 2: Convert to fraction form
    27,242.88/40,866.66 = 7,521.43/x
  3. Step 3: Cross multiply
    27,242.88x = 40,866.66 × 7,521.43
  4. Step 4: Simplify right side
    27,242.88x = 307,375,722.52
  5. Step 5: Solve for x
    x = 307,375,722.52/27,242.88
  6. Step 6: Final answer
    x = 11,282.79

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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.