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Finding the Fourth Proportional to 190,990.46, 287,628.28 and 173,965.44

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Solution

The fourth proportional to 190,990.46, 287,628.28 and 173,965.44 is: 261,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,990.46 : 287,628.28 = 173,965.44 : x
  2. Step 2: Convert to fraction form
    190,990.46/287,628.28 = 173,965.44/x
  3. Step 3: Cross multiply
    190,990.46x = 287,628.28 × 173,965.44
  4. Step 4: Simplify right side
    190,990.46x = 50,037,380,286.64
  5. Step 5: Solve for x
    x = 50,037,380,286.64/190,990.46
  6. Step 6: Final answer
    x = 261,988.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.