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Finding the Fourth Proportional to 108,731.44, 150,056.87 and 60,987.86

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Solution

The fourth proportional to 108,731.44, 150,056.87 and 60,987.86 is: 84,167.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,731.44 : 150,056.87 = 60,987.86 : x
  2. Step 2: Convert to fraction form
    108,731.44/150,056.87 = 60,987.86/x
  3. Step 3: Cross multiply
    108,731.44x = 150,056.87 × 60,987.86
  4. Step 4: Simplify right side
    108,731.44x = 9,151,647,379.60
  5. Step 5: Solve for x
    x = 9,151,647,379.60/108,731.44
  6. Step 6: Final answer
    x = 84,167.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.