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Finding the Fourth Proportional to 18,896.92, 26,077.78 and 10,513.42

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Solution

The fourth proportional to 18,896.92, 26,077.78 and 10,513.42 is: 14,508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.92 : 26,077.78 = 10,513.42 : x
  2. Step 2: Convert to fraction form
    18,896.92/26,077.78 = 10,513.42/x
  3. Step 3: Cross multiply
    18,896.92x = 26,077.78 × 10,513.42
  4. Step 4: Simplify right side
    18,896.92x = 274,166,653.81
  5. Step 5: Solve for x
    x = 274,166,653.81/18,896.92
  6. Step 6: Final answer
    x = 14,508.54

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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.