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Finding the Fourth Proportional to 74,969.46, 112,449.39 and 27,621.30

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Solution

The fourth proportional to 74,969.46, 112,449.39 and 27,621.30 is: 41,430.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,969.46 : 112,449.39 = 27,621.30 : x
  2. Step 2: Convert to fraction form
    74,969.46/112,449.39 = 27,621.30/x
  3. Step 3: Cross multiply
    74,969.46x = 112,449.39 × 27,621.30
  4. Step 4: Simplify right side
    74,969.46x = 3,105,998,336.01
  5. Step 5: Solve for x
    x = 3,105,998,336.01/74,969.46
  6. Step 6: Final answer
    x = 41,430.18

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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.