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Finding the Fourth Proportional to 40,896.40, 61,344.60 and 36,619.60

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Solution

The fourth proportional to 40,896.40, 61,344.60 and 36,619.60 is: 54,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,896.40 : 61,344.60 = 36,619.60 : x
  2. Step 2: Convert to fraction form
    40,896.40/61,344.60 = 36,619.60/x
  3. Step 3: Cross multiply
    40,896.40x = 61,344.60 × 36,619.60
  4. Step 4: Simplify right side
    40,896.40x = 2,246,414,714.16
  5. Step 5: Solve for x
    x = 2,246,414,714.16/40,896.40
  6. Step 6: Final answer
    x = 54,929.40

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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.