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Finding the Fourth Proportional to 115,893.80, 173,840.70 and 108,060.20

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Solution

The fourth proportional to 115,893.80, 173,840.70 and 108,060.20 is: 162,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,893.80 : 173,840.70 = 108,060.20 : x
  2. Step 2: Convert to fraction form
    115,893.80/173,840.70 = 108,060.20/x
  3. Step 3: Cross multiply
    115,893.80x = 173,840.70 × 108,060.20
  4. Step 4: Simplify right side
    115,893.80x = 18,785,260,810.14
  5. Step 5: Solve for x
    x = 18,785,260,810.14/115,893.80
  6. Step 6: Final answer
    x = 162,090.30

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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.