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Finding the Fourth Proportional to 68,387.20, 102,609.60 and 37,244.80

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Solution

The fourth proportional to 68,387.20, 102,609.60 and 37,244.80 is: 55,882.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.20 : 102,609.60 = 37,244.80 : x
  2. Step 2: Convert to fraction form
    68,387.20/102,609.60 = 37,244.80/x
  3. Step 3: Cross multiply
    68,387.20x = 102,609.60 × 37,244.80
  4. Step 4: Simplify right side
    68,387.20x = 3,821,674,030.08
  5. Step 5: Solve for x
    x = 3,821,674,030.08/68,387.20
  6. Step 6: Final answer
    x = 55,882.88

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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.