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Finding the Fourth Proportional to 108,674.80, 163,012.20 and 73,245.40

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Solution

The fourth proportional to 108,674.80, 163,012.20 and 73,245.40 is: 109,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,674.80 : 163,012.20 = 73,245.40 : x
  2. Step 2: Convert to fraction form
    108,674.80/163,012.20 = 73,245.40/x
  3. Step 3: Cross multiply
    108,674.80x = 163,012.20 × 73,245.40
  4. Step 4: Simplify right side
    108,674.80x = 11,939,893,793.88
  5. Step 5: Solve for x
    x = 11,939,893,793.88/108,674.80
  6. Step 6: Final answer
    x = 109,868.10

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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.