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Finding the Fourth Proportional to 367,999.20, 551,804.40 and 157,399.20

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Solution

The fourth proportional to 367,999.20, 551,804.40 and 157,399.20 is: 236,015.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,999.20 : 551,804.40 = 157,399.20 : x
  2. Step 2: Convert to fraction form
    367,999.20/551,804.40 = 157,399.20/x
  3. Step 3: Cross multiply
    367,999.20x = 551,804.40 × 157,399.20
  4. Step 4: Simplify right side
    367,999.20x = 86,853,571,116.48
  5. Step 5: Solve for x
    x = 86,853,571,116.48/367,999.20
  6. Step 6: Final answer
    x = 236,015.65

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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.