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Finding the Fourth Proportional to 395,407.12, 593,170.08 and 114,887.92

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Solution

The fourth proportional to 395,407.12, 593,170.08 and 114,887.92 is: 172,349.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,407.12 : 593,170.08 = 114,887.92 : x
  2. Step 2: Convert to fraction form
    395,407.12/593,170.08 = 114,887.92/x
  3. Step 3: Cross multiply
    395,407.12x = 593,170.08 × 114,887.92
  4. Step 4: Simplify right side
    395,407.12x = 68,148,076,697.43
  5. Step 5: Solve for x
    x = 68,148,076,697.43/395,407.12
  6. Step 6: Final answer
    x = 172,349.14

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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.