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Finding the Fourth Proportional to 111,974.04, 167,141.81 and 98,688.48

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Solution

The fourth proportional to 111,974.04, 167,141.81 and 98,688.48 is: 147,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,974.04 : 167,141.81 = 98,688.48 : x
  2. Step 2: Convert to fraction form
    111,974.04/167,141.81 = 98,688.48/x
  3. Step 3: Cross multiply
    111,974.04x = 167,141.81 × 98,688.48
  4. Step 4: Simplify right side
    111,974.04x = 16,494,970,679.91
  5. Step 5: Solve for x
    x = 16,494,970,679.91/111,974.04
  6. Step 6: Final answer
    x = 147,310.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.