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Finding the Fourth Proportional to 235,121.64, 324,468.79 and 127,693.46

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Solution

The fourth proportional to 235,121.64, 324,468.79 and 127,693.46 is: 176,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,121.64 : 324,468.79 = 127,693.46 : x
  2. Step 2: Convert to fraction form
    235,121.64/324,468.79 = 127,693.46/x
  3. Step 3: Cross multiply
    235,121.64x = 324,468.79 × 127,693.46
  4. Step 4: Simplify right side
    235,121.64x = 41,432,542,949.05
  5. Step 5: Solve for x
    x = 41,432,542,949.05/235,121.64
  6. Step 6: Final answer
    x = 176,217.48

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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.