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Finding the Fourth Proportional to 73,268.70, 109,906.65 and 38,276.70

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Solution

The fourth proportional to 73,268.70, 109,906.65 and 38,276.70 is: 57,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,268.70 : 109,906.65 = 38,276.70 : x
  2. Step 2: Convert to fraction form
    73,268.70/109,906.65 = 38,276.70/x
  3. Step 3: Cross multiply
    73,268.70x = 109,906.65 × 38,276.70
  4. Step 4: Simplify right side
    73,268.70x = 4,206,863,870.06
  5. Step 5: Solve for x
    x = 4,206,863,870.06/73,268.70
  6. Step 6: Final answer
    x = 57,416.93

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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.