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Finding the Fourth Proportional to 108,729.80, 163,094.70 and 104,793.20

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Solution

The fourth proportional to 108,729.80, 163,094.70 and 104,793.20 is: 157,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.80 : 163,094.70 = 104,793.20 : x
  2. Step 2: Convert to fraction form
    108,729.80/163,094.70 = 104,793.20/x
  3. Step 3: Cross multiply
    108,729.80x = 163,094.70 × 104,793.20
  4. Step 4: Simplify right side
    108,729.80x = 17,091,215,516.04
  5. Step 5: Solve for x
    x = 17,091,215,516.04/108,729.80
  6. Step 6: Final answer
    x = 157,189.80

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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.