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Finding the Fourth Proportional to 236,978.64, 326,818.80 and 196,628.58

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Solution

The fourth proportional to 236,978.64, 326,818.80 and 196,628.58 is: 271,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,978.64 : 326,818.80 = 196,628.58 : x
  2. Step 2: Convert to fraction form
    236,978.64/326,818.80 = 196,628.58/x
  3. Step 3: Cross multiply
    236,978.64x = 326,818.80 × 196,628.58
  4. Step 4: Simplify right side
    236,978.64x = 64,261,916,561.30
  5. Step 5: Solve for x
    x = 64,261,916,561.30/236,978.64
  6. Step 6: Final answer
    x = 271,171.77

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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.