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Finding the Fourth Proportional to 18,751.98, 25,854.21 and 12,025.74

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Solution

The fourth proportional to 18,751.98, 25,854.21 and 12,025.74 is: 16,580.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.98 : 25,854.21 = 12,025.74 : x
  2. Step 2: Convert to fraction form
    18,751.98/25,854.21 = 12,025.74/x
  3. Step 3: Cross multiply
    18,751.98x = 25,854.21 × 12,025.74
  4. Step 4: Simplify right side
    18,751.98x = 310,916,007.37
  5. Step 5: Solve for x
    x = 310,916,007.37/18,751.98
  6. Step 6: Final answer
    x = 16,580.44

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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.