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Finding the Fourth Proportional to 259,969.76, 389,954.64 and 93,757.76

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Solution

The fourth proportional to 259,969.76, 389,954.64 and 93,757.76 is: 140,636.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,969.76 : 389,954.64 = 93,757.76 : x
  2. Step 2: Convert to fraction form
    259,969.76/389,954.64 = 93,757.76/x
  3. Step 3: Cross multiply
    259,969.76x = 389,954.64 × 93,757.76
  4. Step 4: Simplify right side
    259,969.76x = 36,561,273,548.01
  5. Step 5: Solve for x
    x = 36,561,273,548.01/259,969.76
  6. Step 6: Final answer
    x = 140,636.64

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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.