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Finding the Fourth Proportional to 60,826.01, 91,243.80 and 21,391.97

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Solution

The fourth proportional to 60,826.01, 91,243.80 and 21,391.97 is: 32,089.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,826.01 : 91,243.80 = 21,391.97 : x
  2. Step 2: Convert to fraction form
    60,826.01/91,243.80 = 21,391.97/x
  3. Step 3: Cross multiply
    60,826.01x = 91,243.80 × 21,391.97
  4. Step 4: Simplify right side
    60,826.01x = 1,951,884,176.07
  5. Step 5: Solve for x
    x = 1,951,884,176.07/60,826.01
  6. Step 6: Final answer
    x = 32,089.63

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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.