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Finding the Fourth Proportional to 109,644.78, 151,310.16 and 59,343.78

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Solution

The fourth proportional to 109,644.78, 151,310.16 and 59,343.78 is: 81,894.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,644.78 : 151,310.16 = 59,343.78 : x
  2. Step 2: Convert to fraction form
    109,644.78/151,310.16 = 59,343.78/x
  3. Step 3: Cross multiply
    109,644.78x = 151,310.16 × 59,343.78
  4. Step 4: Simplify right side
    109,644.78x = 8,979,316,846.80
  5. Step 5: Solve for x
    x = 8,979,316,846.80/109,644.78
  6. Step 6: Final answer
    x = 81,894.61

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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.