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Finding the Fourth Proportional to 26,859.94, 40,314.51 and 13,721.54

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Solution

The fourth proportional to 26,859.94, 40,314.51 and 13,721.54 is: 20,594.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,859.94 : 40,314.51 = 13,721.54 : x
  2. Step 2: Convert to fraction form
    26,859.94/40,314.51 = 13,721.54/x
  3. Step 3: Cross multiply
    26,859.94x = 40,314.51 × 13,721.54
  4. Step 4: Simplify right side
    26,859.94x = 553,176,959.97
  5. Step 5: Solve for x
    x = 553,176,959.97/26,859.94
  6. Step 6: Final answer
    x = 20,594.87

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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.