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Finding the Fourth Proportional to 230,308.20, 345,656.70 and 112,080.60

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Solution

The fourth proportional to 230,308.20, 345,656.70 and 112,080.60 is: 168,215.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,308.20 : 345,656.70 = 112,080.60 : x
  2. Step 2: Convert to fraction form
    230,308.20/345,656.70 = 112,080.60/x
  3. Step 3: Cross multiply
    230,308.20x = 345,656.70 × 112,080.60
  4. Step 4: Simplify right side
    230,308.20x = 38,741,410,330.02
  5. Step 5: Solve for x
    x = 38,741,410,330.02/230,308.20
  6. Step 6: Final answer
    x = 168,215.51

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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.