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Finding the Fourth Proportional to 112,074.40, 168,203.40 and 111,199.60

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Solution

The fourth proportional to 112,074.40, 168,203.40 and 111,199.60 is: 166,890.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,074.40 : 168,203.40 = 111,199.60 : x
  2. Step 2: Convert to fraction form
    112,074.40/168,203.40 = 111,199.60/x
  3. Step 3: Cross multiply
    112,074.40x = 168,203.40 × 111,199.60
  4. Step 4: Simplify right side
    112,074.40x = 18,704,150,798.64
  5. Step 5: Solve for x
    x = 18,704,150,798.64/112,074.40
  6. Step 6: Final answer
    x = 166,890.48

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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.