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Finding the Fourth Proportional to 18,868.69, 26,041.11 and 10,805.35

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Solution

The fourth proportional to 18,868.69, 26,041.11 and 10,805.35 is: 14,912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.69 : 26,041.11 = 10,805.35 : x
  2. Step 2: Convert to fraction form
    18,868.69/26,041.11 = 10,805.35/x
  3. Step 3: Cross multiply
    18,868.69x = 26,041.11 × 10,805.35
  4. Step 4: Simplify right side
    18,868.69x = 281,383,307.94
  5. Step 5: Solve for x
    x = 281,383,307.94/18,868.69
  6. Step 6: Final answer
    x = 14,912.71

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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.