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Finding the Fourth Proportional to 186,752.70, 280,015.92 and 74,449.98

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Solution

The fourth proportional to 186,752.70, 280,015.92 and 74,449.98 is: 111,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,752.70 : 280,015.92 = 74,449.98 : x
  2. Step 2: Convert to fraction form
    186,752.70/280,015.92 = 74,449.98/x
  3. Step 3: Cross multiply
    186,752.70x = 280,015.92 × 74,449.98
  4. Step 4: Simplify right side
    186,752.70x = 20,847,179,643.68
  5. Step 5: Solve for x
    x = 20,847,179,643.68/186,752.70
  6. Step 6: Final answer
    x = 111,629.87

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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.