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Finding the Fourth Proportional to 73,809.25, 110,639.86 and 38,250.65

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Solution

The fourth proportional to 73,809.25, 110,639.86 and 38,250.65 is: 57,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,809.25 : 110,639.86 = 38,250.65 : x
  2. Step 2: Convert to fraction form
    73,809.25/110,639.86 = 38,250.65/x
  3. Step 3: Cross multiply
    73,809.25x = 110,639.86 × 38,250.65
  4. Step 4: Simplify right side
    73,809.25x = 4,232,046,741.88
  5. Step 5: Solve for x
    x = 4,232,046,741.88/73,809.25
  6. Step 6: Final answer
    x = 57,337.62

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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.