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Finding the Fourth Proportional to 18,161.92, 25,064.52 and 13,677.76

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Solution

The fourth proportional to 18,161.92, 25,064.52 and 13,677.76 is: 18,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.92 : 25,064.52 = 13,677.76 : x
  2. Step 2: Convert to fraction form
    18,161.92/25,064.52 = 13,677.76/x
  3. Step 3: Cross multiply
    18,161.92x = 25,064.52 × 13,677.76
  4. Step 4: Simplify right side
    18,161.92x = 342,826,489.08
  5. Step 5: Solve for x
    x = 342,826,489.08/18,161.92
  6. Step 6: Final answer
    x = 18,876.11

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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.