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Finding the Fourth Proportional to 174,318.78, 261,481.80 and 49,659.78

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Solution

The fourth proportional to 174,318.78, 261,481.80 and 49,659.78 is: 74,490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,318.78 : 261,481.80 = 49,659.78 : x
  2. Step 2: Convert to fraction form
    174,318.78/261,481.80 = 49,659.78/x
  3. Step 3: Cross multiply
    174,318.78x = 261,481.80 × 49,659.78
  4. Step 4: Simplify right side
    174,318.78x = 12,985,128,662.00
  5. Step 5: Solve for x
    x = 12,985,128,662.00/174,318.78
  6. Step 6: Final answer
    x = 74,490.70

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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.