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Finding the Fourth Proportional to 26,685.44, 40,026.72 and 8,216

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Solution

The fourth proportional to 26,685.44, 40,026.72 and 8,216 is: 12,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,685.44 : 40,026.72 = 8,216 : x
  2. Step 2: Convert to fraction form
    26,685.44/40,026.72 = 8,216/x
  3. Step 3: Cross multiply
    26,685.44x = 40,026.72 × 8,216
  4. Step 4: Simplify right side
    26,685.44x = 328,859,531.52
  5. Step 5: Solve for x
    x = 328,859,531.52/26,685.44
  6. Step 6: Final answer
    x = 12,323.56

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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.