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Finding the Fourth Proportional to 27,039.31, 40,559.06 and 8,319.22

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Solution

The fourth proportional to 27,039.31, 40,559.06 and 8,319.22 is: 12,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,039.31 : 40,559.06 = 8,319.22 : x
  2. Step 2: Convert to fraction form
    27,039.31/40,559.06 = 8,319.22/x
  3. Step 3: Cross multiply
    27,039.31x = 40,559.06 × 8,319.22
  4. Step 4: Simplify right side
    27,039.31x = 337,419,701.54
  5. Step 5: Solve for x
    x = 337,419,701.54/27,039.31
  6. Step 6: Final answer
    x = 12,478.86

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1.5x scale

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.