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Finding the Fourth Proportional to 171,529.92, 236,221.92 and 154,388.16

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Solution

The fourth proportional to 171,529.92, 236,221.92 and 154,388.16 is: 212,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,529.92 : 236,221.92 = 154,388.16 : x
  2. Step 2: Convert to fraction form
    171,529.92/236,221.92 = 154,388.16/x
  3. Step 3: Cross multiply
    171,529.92x = 236,221.92 × 154,388.16
  4. Step 4: Simplify right side
    171,529.92x = 36,469,867,580.47
  5. Step 5: Solve for x
    x = 36,469,867,580.47/171,529.92
  6. Step 6: Final answer
    x = 212,615.20

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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.