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Finding the Fourth Proportional to 18,810.71, 25,958.99 and 10,745.44

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Solution

The fourth proportional to 18,810.71, 25,958.99 and 10,745.44 is: 14,828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.71 : 25,958.99 = 10,745.44 : x
  2. Step 2: Convert to fraction form
    18,810.71/25,958.99 = 10,745.44/x
  3. Step 3: Cross multiply
    18,810.71x = 25,958.99 × 10,745.44
  4. Step 4: Simplify right side
    18,810.71x = 278,940,731.47
  5. Step 5: Solve for x
    x = 278,940,731.47/18,810.71
  6. Step 6: Final answer
    x = 14,828.82

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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.