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Finding the Fourth Proportional to 212,662.76, 293,481.24 and 122,035.32

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Solution

The fourth proportional to 212,662.76, 293,481.24 and 122,035.32 is: 168,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,662.76 : 293,481.24 = 122,035.32 : x
  2. Step 2: Convert to fraction form
    212,662.76/293,481.24 = 122,035.32/x
  3. Step 3: Cross multiply
    212,662.76x = 293,481.24 × 122,035.32
  4. Step 4: Simplify right side
    212,662.76x = 35,815,077,037.40
  5. Step 5: Solve for x
    x = 35,815,077,037.40/212,662.76
  6. Step 6: Final answer
    x = 168,412.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.