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Finding the Fourth Proportional to 95,639, 143,481.54 and 29,975

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Solution

The fourth proportional to 95,639, 143,481.54 and 29,975 is: 44,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,639 : 143,481.54 = 29,975 : x
  2. Step 2: Convert to fraction form
    95,639/143,481.54 = 29,975/x
  3. Step 3: Cross multiply
    95,639x = 143,481.54 × 29,975
  4. Step 4: Simplify right side
    95,639x = 4,300,859,161.50
  5. Step 5: Solve for x
    x = 4,300,859,161.50/95,639
  6. Step 6: Final answer
    x = 44,969.72

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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.