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Finding the Fourth Proportional to 111,932.30, 168,028.05 and 67,609.10

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Solution

The fourth proportional to 111,932.30, 168,028.05 and 67,609.10 is: 101,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,932.30 : 168,028.05 = 67,609.10 : x
  2. Step 2: Convert to fraction form
    111,932.30/168,028.05 = 67,609.10/x
  3. Step 3: Cross multiply
    111,932.30x = 168,028.05 × 67,609.10
  4. Step 4: Simplify right side
    111,932.30x = 11,360,225,235.26
  5. Step 5: Solve for x
    x = 11,360,225,235.26/111,932.30
  6. Step 6: Final answer
    x = 101,491.93

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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.