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Finding the Fourth Proportional to 18,497.91, 25,545.75 and 11,786.55

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Solution

The fourth proportional to 18,497.91, 25,545.75 and 11,786.55 is: 16,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,497.91 : 25,545.75 = 11,786.55 : x
  2. Step 2: Convert to fraction form
    18,497.91/25,545.75 = 11,786.55/x
  3. Step 3: Cross multiply
    18,497.91x = 25,545.75 × 11,786.55
  4. Step 4: Simplify right side
    18,497.91x = 301,096,259.66
  5. Step 5: Solve for x
    x = 301,096,259.66/18,497.91
  6. Step 6: Final answer
    x = 16,277.31

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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.