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Finding the Fourth Proportional to 367,891.13, 551,993.54 and 143,409.59

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Solution

The fourth proportional to 367,891.13, 551,993.54 and 143,409.59 is: 215,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,891.13 : 551,993.54 = 143,409.59 : x
  2. Step 2: Convert to fraction form
    367,891.13/551,993.54 = 143,409.59/x
  3. Step 3: Cross multiply
    367,891.13x = 551,993.54 × 143,409.59
  4. Step 4: Simplify right side
    367,891.13x = 79,161,163,777.03
  5. Step 5: Solve for x
    x = 79,161,163,777.03/367,891.13
  6. Step 6: Final answer
    x = 215,175.52

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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.