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Finding the Fourth Proportional to 11,112, 16,667.80 and 3,716.96

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Solution

The fourth proportional to 11,112, 16,667.80 and 3,716.96 is: 5,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112 : 16,667.80 = 3,716.96 : x
  2. Step 2: Convert to fraction form
    11,112/16,667.80 = 3,716.96/x
  3. Step 3: Cross multiply
    11,112x = 16,667.80 × 3,716.96
  4. Step 4: Simplify right side
    11,112x = 61,953,545.89
  5. Step 5: Solve for x
    x = 61,953,545.89/11,112
  6. Step 6: Final answer
    x = 5,575.37

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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.