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Finding the Fourth Proportional to 115,977.60, 173,485.80 and 108,892.80

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Solution

The fourth proportional to 115,977.60, 173,485.80 and 108,892.80 is: 162,887.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,977.60 : 173,485.80 = 108,892.80 : x
  2. Step 2: Convert to fraction form
    115,977.60/173,485.80 = 108,892.80/x
  3. Step 3: Cross multiply
    115,977.60x = 173,485.80 × 108,892.80
  4. Step 4: Simplify right side
    115,977.60x = 18,891,354,522.24
  5. Step 5: Solve for x
    x = 18,891,354,522.24/115,977.60
  6. Step 6: Final answer
    x = 162,887.96

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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.