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Finding the Fourth Proportional to 328,201.55, 492,258.59 and 91,524.41

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Solution

The fourth proportional to 328,201.55, 492,258.59 and 91,524.41 is: 137,274.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,201.55 : 492,258.59 = 91,524.41 : x
  2. Step 2: Convert to fraction form
    328,201.55/492,258.59 = 91,524.41/x
  3. Step 3: Cross multiply
    328,201.55x = 492,258.59 × 91,524.41
  4. Step 4: Simplify right side
    328,201.55x = 45,053,676,559.56
  5. Step 5: Solve for x
    x = 45,053,676,559.56/328,201.55
  6. Step 6: Final answer
    x = 137,274.42

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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.