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Finding the Fourth Proportional to 367,621.80, 551,756.70 and 217,674.60

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Solution

The fourth proportional to 367,621.80, 551,756.70 and 217,674.60 is: 326,703.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,621.80 : 551,756.70 = 217,674.60 : x
  2. Step 2: Convert to fraction form
    367,621.80/551,756.70 = 217,674.60/x
  3. Step 3: Cross multiply
    367,621.80x = 551,756.70 × 217,674.60
  4. Step 4: Simplify right side
    367,621.80x = 120,103,418,969.82
  5. Step 5: Solve for x
    x = 120,103,418,969.82/367,621.80
  6. Step 6: Final answer
    x = 326,703.75

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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.