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Finding the Fourth Proportional to 641,354.70, 962,087.13 and 168,040.11

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Solution

The fourth proportional to 641,354.70, 962,087.13 and 168,040.11 is: 252,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,354.70 : 962,087.13 = 168,040.11 : x
  2. Step 2: Convert to fraction form
    641,354.70/962,087.13 = 168,040.11/x
  3. Step 3: Cross multiply
    641,354.70x = 962,087.13 × 168,040.11
  4. Step 4: Simplify right side
    641,354.70x = 161,669,227,154.78
  5. Step 5: Solve for x
    x = 161,669,227,154.78/641,354.70
  6. Step 6: Final answer
    x = 252,074.60

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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.