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Finding the Fourth Proportional to 395,549.60, 593,340.80 and 115,066.86

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Solution

The fourth proportional to 395,549.60, 593,340.80 and 115,066.86 is: 172,605.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,549.60 : 593,340.80 = 115,066.86 : x
  2. Step 2: Convert to fraction form
    395,549.60/593,340.80 = 115,066.86/x
  3. Step 3: Cross multiply
    395,549.60x = 593,340.80 × 115,066.86
  4. Step 4: Simplify right side
    395,549.60x = 68,273,862,765.89
  5. Step 5: Solve for x
    x = 68,273,862,765.89/395,549.60
  6. Step 6: Final answer
    x = 172,605.06

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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.