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Finding the Fourth Proportional to 327,597.48, 491,398.95 and 90,958.61

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Solution

The fourth proportional to 327,597.48, 491,398.95 and 90,958.61 is: 136,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,597.48 : 491,398.95 = 90,958.61 : x
  2. Step 2: Convert to fraction form
    327,597.48/491,398.95 = 90,958.61/x
  3. Step 3: Cross multiply
    327,597.48x = 491,398.95 × 90,958.61
  4. Step 4: Simplify right side
    327,597.48x = 44,696,965,447.46
  5. Step 5: Solve for x
    x = 44,696,965,447.46/327,597.48
  6. Step 6: Final answer
    x = 136,438.67

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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.