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Finding the Fourth Proportional to 126,048.10, 188,893.94 and 69,912.94

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Solution

The fourth proportional to 126,048.10, 188,893.94 and 69,912.94 is: 104,770.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,048.10 : 188,893.94 = 69,912.94 : x
  2. Step 2: Convert to fraction form
    126,048.10/188,893.94 = 69,912.94/x
  3. Step 3: Cross multiply
    126,048.10x = 188,893.94 × 69,912.94
  4. Step 4: Simplify right side
    126,048.10x = 13,206,130,693.58
  5. Step 5: Solve for x
    x = 13,206,130,693.58/126,048.10
  6. Step 6: Final answer
    x = 104,770.57

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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.