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Finding the Fourth Proportional to 113,842.80, 170,764.20 and 112,093.20

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Solution

The fourth proportional to 113,842.80, 170,764.20 and 112,093.20 is: 168,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,842.80 : 170,764.20 = 112,093.20 : x
  2. Step 2: Convert to fraction form
    113,842.80/170,764.20 = 112,093.20/x
  3. Step 3: Cross multiply
    113,842.80x = 170,764.20 × 112,093.20
  4. Step 4: Simplify right side
    113,842.80x = 19,141,505,623.44
  5. Step 5: Solve for x
    x = 19,141,505,623.44/113,842.80
  6. Step 6: Final answer
    x = 168,139.80

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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.