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Finding the Fourth Proportional to 19,238.61, 26,540.61 and 11,277.48

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Solution

The fourth proportional to 19,238.61, 26,540.61 and 11,277.48 is: 15,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.61 : 26,540.61 = 11,277.48 : x
  2. Step 2: Convert to fraction form
    19,238.61/26,540.61 = 11,277.48/x
  3. Step 3: Cross multiply
    19,238.61x = 26,540.61 × 11,277.48
  4. Step 4: Simplify right side
    19,238.61x = 299,311,169.84
  5. Step 5: Solve for x
    x = 299,311,169.84/19,238.61
  6. Step 6: Final answer
    x = 15,557.83

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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.