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Finding the Fourth Proportional to 108,890.88, 163,474.56 and 92,578.56

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Solution

The fourth proportional to 108,890.88, 163,474.56 and 92,578.56 is: 138,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,890.88 : 163,474.56 = 92,578.56 : x
  2. Step 2: Convert to fraction form
    108,890.88/163,474.56 = 92,578.56/x
  3. Step 3: Cross multiply
    108,890.88x = 163,474.56 × 92,578.56
  4. Step 4: Simplify right side
    108,890.88x = 15,134,239,361.43
  5. Step 5: Solve for x
    x = 15,134,239,361.43/108,890.88
  6. Step 6: Final answer
    x = 138,985.37

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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.