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Finding the Fourth Proportional to 472,245.22, 708,179.91 and 172,657.54

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Solution

The fourth proportional to 472,245.22, 708,179.91 and 172,657.54 is: 258,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,245.22 : 708,179.91 = 172,657.54 : x
  2. Step 2: Convert to fraction form
    472,245.22/708,179.91 = 172,657.54/x
  3. Step 3: Cross multiply
    472,245.22x = 708,179.91 × 172,657.54
  4. Step 4: Simplify right side
    472,245.22x = 122,272,601,138.02
  5. Step 5: Solve for x
    x = 122,272,601,138.02/472,245.22
  6. Step 6: Final answer
    x = 258,917.60

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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.