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Finding the Fourth Proportional to 18,832.92, 25,992.84 and 12,862.38

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Solution

The fourth proportional to 18,832.92, 25,992.84 and 12,862.38 is: 17,752.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.92 : 25,992.84 = 12,862.38 : x
  2. Step 2: Convert to fraction form
    18,832.92/25,992.84 = 12,862.38/x
  3. Step 3: Cross multiply
    18,832.92x = 25,992.84 × 12,862.38
  4. Step 4: Simplify right side
    18,832.92x = 334,329,785.36
  5. Step 5: Solve for x
    x = 334,329,785.36/18,832.92
  6. Step 6: Final answer
    x = 17,752.41

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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.