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Finding the Fourth Proportional to 48,489.60, 66,914.28 and 29,380.68

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Solution

The fourth proportional to 48,489.60, 66,914.28 and 29,380.68 is: 40,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,489.60 : 66,914.28 = 29,380.68 : x
  2. Step 2: Convert to fraction form
    48,489.60/66,914.28 = 29,380.68/x
  3. Step 3: Cross multiply
    48,489.60x = 66,914.28 × 29,380.68
  4. Step 4: Simplify right side
    48,489.60x = 1,965,987,048.11
  5. Step 5: Solve for x
    x = 1,965,987,048.11/48,489.60
  6. Step 6: Final answer
    x = 40,544.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.