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Finding the Fourth Proportional to 108,672.86, 162,991.78 and 29,768.64

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Solution

The fourth proportional to 108,672.86, 162,991.78 and 29,768.64 is: 44,648.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,672.86 : 162,991.78 = 29,768.64 : x
  2. Step 2: Convert to fraction form
    108,672.86/162,991.78 = 29,768.64/x
  3. Step 3: Cross multiply
    108,672.86x = 162,991.78 × 29,768.64
  4. Step 4: Simplify right side
    108,672.86x = 4,852,043,621.78
  5. Step 5: Solve for x
    x = 4,852,043,621.78/108,672.86
  6. Step 6: Final answer
    x = 44,648.16

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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.