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Finding the Fourth Proportional to 96,076.80, 144,171.36 and 69,396.48

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Solution

The fourth proportional to 96,076.80, 144,171.36 and 69,396.48 is: 104,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,076.80 : 144,171.36 = 69,396.48 : x
  2. Step 2: Convert to fraction form
    96,076.80/144,171.36 = 69,396.48/x
  3. Step 3: Cross multiply
    96,076.80x = 144,171.36 × 69,396.48
  4. Step 4: Simplify right side
    96,076.80x = 10,004,984,900.81
  5. Step 5: Solve for x
    x = 10,004,984,900.81/96,076.80
  6. Step 6: Final answer
    x = 104,135.28

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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.