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Finding the Fourth Proportional to 18,804.33, 25,951.19 and 10,421.37

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Solution

The fourth proportional to 18,804.33, 25,951.19 and 10,421.37 is: 14,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.33 : 25,951.19 = 10,421.37 : x
  2. Step 2: Convert to fraction form
    18,804.33/25,951.19 = 10,421.37/x
  3. Step 3: Cross multiply
    18,804.33x = 25,951.19 × 10,421.37
  4. Step 4: Simplify right side
    18,804.33x = 270,446,900.82
  5. Step 5: Solve for x
    x = 270,446,900.82/18,804.33
  6. Step 6: Final answer
    x = 14,382.16

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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.