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Finding the Fourth Proportional to 19,179.92, 26,471.60 and 11,113.88

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Solution

The fourth proportional to 19,179.92, 26,471.60 and 11,113.88 is: 15,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.92 : 26,471.60 = 11,113.88 : x
  2. Step 2: Convert to fraction form
    19,179.92/26,471.60 = 11,113.88/x
  3. Step 3: Cross multiply
    19,179.92x = 26,471.60 × 11,113.88
  4. Step 4: Simplify right side
    19,179.92x = 294,202,185.81
  5. Step 5: Solve for x
    x = 294,202,185.81/19,179.92
  6. Step 6: Final answer
    x = 15,339.07

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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.