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Finding the Fourth Proportional to 111,814.07, 167,721.12 and 76,647.11

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Solution

The fourth proportional to 111,814.07, 167,721.12 and 76,647.11 is: 114,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,814.07 : 167,721.12 = 76,647.11 : x
  2. Step 2: Convert to fraction form
    111,814.07/167,721.12 = 76,647.11/x
  3. Step 3: Cross multiply
    111,814.07x = 167,721.12 × 76,647.11
  4. Step 4: Simplify right side
    111,814.07x = 12,855,338,295.36
  5. Step 5: Solve for x
    x = 12,855,338,295.36/111,814.07
  6. Step 6: Final answer
    x = 114,970.67

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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.