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Finding the Fourth Proportional to 395,903.60, 593,670.72 and 115,364.96

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Solution

The fourth proportional to 395,903.60, 593,670.72 and 115,364.96 is: 172,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,903.60 : 593,670.72 = 115,364.96 : x
  2. Step 2: Convert to fraction form
    395,903.60/593,670.72 = 115,364.96/x
  3. Step 3: Cross multiply
    395,903.60x = 593,670.72 × 115,364.96
  4. Step 4: Simplify right side
    395,903.60x = 68,488,798,865.97
  5. Step 5: Solve for x
    x = 68,488,798,865.97/395,903.60
  6. Step 6: Final answer
    x = 172,993.62

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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.