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Finding the Fourth Proportional to 368,793.72, 552,961.46 and 155,451.86

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Solution

The fourth proportional to 368,793.72, 552,961.46 and 155,451.86 is: 233,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,793.72 : 552,961.46 = 155,451.86 : x
  2. Step 2: Convert to fraction form
    368,793.72/552,961.46 = 155,451.86/x
  3. Step 3: Cross multiply
    368,793.72x = 552,961.46 × 155,451.86
  4. Step 4: Simplify right side
    368,793.72x = 85,958,887,465.32
  5. Step 5: Solve for x
    x = 85,958,887,465.32/368,793.72
  6. Step 6: Final answer
    x = 233,081.21

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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.