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Finding the Fourth Proportional to 111,750.30, 167,625.45 and 69,759.90

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Solution

The fourth proportional to 111,750.30, 167,625.45 and 69,759.90 is: 104,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.30 : 167,625.45 = 69,759.90 : x
  2. Step 2: Convert to fraction form
    111,750.30/167,625.45 = 69,759.90/x
  3. Step 3: Cross multiply
    111,750.30x = 167,625.45 × 69,759.90
  4. Step 4: Simplify right side
    111,750.30x = 11,693,534,629.46
  5. Step 5: Solve for x
    x = 11,693,534,629.46/111,750.30
  6. Step 6: Final answer
    x = 104,639.85

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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.