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Finding the Fourth Proportional to 167,563.81, 231,243.69 and 98,640.84

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Solution

The fourth proportional to 167,563.81, 231,243.69 and 98,640.84 is: 136,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,563.81 : 231,243.69 = 98,640.84 : x
  2. Step 2: Convert to fraction form
    167,563.81/231,243.69 = 98,640.84/x
  3. Step 3: Cross multiply
    167,563.81x = 231,243.69 × 98,640.84
  4. Step 4: Simplify right side
    167,563.81x = 22,810,071,826.30
  5. Step 5: Solve for x
    x = 22,810,071,826.30/167,563.81
  6. Step 6: Final answer
    x = 136,127.67

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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.