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Finding the Fourth Proportional to 319,662.55, 479,440.37 and 117,216.82

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Solution

The fourth proportional to 319,662.55, 479,440.37 and 117,216.82 is: 175,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,662.55 : 479,440.37 = 117,216.82 : x
  2. Step 2: Convert to fraction form
    319,662.55/479,440.37 = 117,216.82/x
  3. Step 3: Cross multiply
    319,662.55x = 479,440.37 × 117,216.82
  4. Step 4: Simplify right side
    319,662.55x = 56,198,475,784.02
  5. Step 5: Solve for x
    x = 56,198,475,784.02/319,662.55
  6. Step 6: Final answer
    x = 175,805.63

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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.