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Finding the Fourth Proportional to 93,767.62, 140,709.75 and 68,422.72

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Solution

The fourth proportional to 93,767.62, 140,709.75 and 68,422.72 is: 102,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,767.62 : 140,709.75 = 68,422.72 : x
  2. Step 2: Convert to fraction form
    93,767.62/140,709.75 = 68,422.72/x
  3. Step 3: Cross multiply
    93,767.62x = 140,709.75 × 68,422.72
  4. Step 4: Simplify right side
    93,767.62x = 9,627,743,825.52
  5. Step 5: Solve for x
    x = 9,627,743,825.52/93,767.62
  6. Step 6: Final answer
    x = 102,676.64

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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.