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Finding the Fourth Proportional to 11,910.58, 17,860.69 and 5,246.94

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Solution

The fourth proportional to 11,910.58, 17,860.69 and 5,246.94 is: 7,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.58 : 17,860.69 = 5,246.94 : x
  2. Step 2: Convert to fraction form
    11,910.58/17,860.69 = 5,246.94/x
  3. Step 3: Cross multiply
    11,910.58x = 17,860.69 × 5,246.94
  4. Step 4: Simplify right side
    11,910.58x = 93,713,968.79
  5. Step 5: Solve for x
    x = 93,713,968.79/11,910.58
  6. Step 6: Final answer
    x = 7,868.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.