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Finding the Fourth Proportional to 18,865.05, 26,035.82 and 11,693.05

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Solution

The fourth proportional to 18,865.05, 26,035.82 and 11,693.05 is: 16,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.05 : 26,035.82 = 11,693.05 : x
  2. Step 2: Convert to fraction form
    18,865.05/26,035.82 = 11,693.05/x
  3. Step 3: Cross multiply
    18,865.05x = 26,035.82 × 11,693.05
  4. Step 4: Simplify right side
    18,865.05x = 304,438,145.05
  5. Step 5: Solve for x
    x = 304,438,145.05/18,865.05
  6. Step 6: Final answer
    x = 16,137.68

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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.