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Finding the Fourth Proportional to 368,624.75, 553,010.90 and 115,968.78

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Solution

The fourth proportional to 368,624.75, 553,010.90 and 115,968.78 is: 173,976.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,624.75 : 553,010.90 = 115,968.78 : x
  2. Step 2: Convert to fraction form
    368,624.75/553,010.90 = 115,968.78/x
  3. Step 3: Cross multiply
    368,624.75x = 553,010.90 × 115,968.78
  4. Step 4: Simplify right side
    368,624.75x = 64,131,998,819.86
  5. Step 5: Solve for x
    x = 64,131,998,819.86/368,624.75
  6. Step 6: Final answer
    x = 173,976.38

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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.