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Finding the Fourth Proportional to 26,478.53, 39,723.27 and 7,759.18

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Solution

The fourth proportional to 26,478.53, 39,723.27 and 7,759.18 is: 11,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,478.53 : 39,723.27 = 7,759.18 : x
  2. Step 2: Convert to fraction form
    26,478.53/39,723.27 = 7,759.18/x
  3. Step 3: Cross multiply
    26,478.53x = 39,723.27 × 7,759.18
  4. Step 4: Simplify right side
    26,478.53x = 308,220,002.12
  5. Step 5: Solve for x
    x = 308,220,002.12/26,478.53
  6. Step 6: Final answer
    x = 11,640.37

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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.