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Finding the Fourth Proportional to 148,615.44, 205,092.78 and 84,959.16

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Solution

The fourth proportional to 148,615.44, 205,092.78 and 84,959.16 is: 117,245.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,615.44 : 205,092.78 = 84,959.16 : x
  2. Step 2: Convert to fraction form
    148,615.44/205,092.78 = 84,959.16/x
  3. Step 3: Cross multiply
    148,615.44x = 205,092.78 × 84,959.16
  4. Step 4: Simplify right side
    148,615.44x = 17,424,510,310.86
  5. Step 5: Solve for x
    x = 17,424,510,310.86/148,615.44
  6. Step 6: Final answer
    x = 117,245.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.