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Finding the Fourth Proportional to 297,281.78, 445,866.60 and 84,048

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Solution

The fourth proportional to 297,281.78, 445,866.60 and 84,048 is: 126,056.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,281.78 : 445,866.60 = 84,048 : x
  2. Step 2: Convert to fraction form
    297,281.78/445,866.60 = 84,048/x
  3. Step 3: Cross multiply
    297,281.78x = 445,866.60 × 84,048
  4. Step 4: Simplify right side
    297,281.78x = 37,474,195,996.80
  5. Step 5: Solve for x
    x = 37,474,195,996.80/297,281.78
  6. Step 6: Final answer
    x = 126,056.15

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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.