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Finding the Fourth Proportional to 95,911.20, 144,039.60 and 69,645.60

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Solution

The fourth proportional to 95,911.20, 144,039.60 and 69,645.60 is: 104,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,911.20 : 144,039.60 = 69,645.60 : x
  2. Step 2: Convert to fraction form
    95,911.20/144,039.60 = 69,645.60/x
  3. Step 3: Cross multiply
    95,911.20x = 144,039.60 × 69,645.60
  4. Step 4: Simplify right side
    95,911.20x = 10,031,724,365.76
  5. Step 5: Solve for x
    x = 10,031,724,365.76/95,911.20
  6. Step 6: Final answer
    x = 104,593.88

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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.