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Finding the Fourth Proportional to 367,621.40, 551,496.90 and 131,101.40

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Solution

The fourth proportional to 367,621.40, 551,496.90 and 131,101.40 is: 196,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,621.40 : 551,496.90 = 131,101.40 : x
  2. Step 2: Convert to fraction form
    367,621.40/551,496.90 = 131,101.40/x
  3. Step 3: Cross multiply
    367,621.40x = 551,496.90 × 131,101.40
  4. Step 4: Simplify right side
    367,621.40x = 72,302,015,685.66
  5. Step 5: Solve for x
    x = 72,302,015,685.66/367,621.40
  6. Step 6: Final answer
    x = 196,675.21

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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.