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Finding the Fourth Proportional to 18,411.93, 25,408.31 and 10,959.93

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Solution

The fourth proportional to 18,411.93, 25,408.31 and 10,959.93 is: 15,124.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.93 : 25,408.31 = 10,959.93 : x
  2. Step 2: Convert to fraction form
    18,411.93/25,408.31 = 10,959.93/x
  3. Step 3: Cross multiply
    18,411.93x = 25,408.31 × 10,959.93
  4. Step 4: Simplify right side
    18,411.93x = 278,473,244.22
  5. Step 5: Solve for x
    x = 278,473,244.22/18,411.93
  6. Step 6: Final answer
    x = 15,124.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.