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Finding the Fourth Proportional to 109,478.88, 151,080.66 and 59,177.88

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Solution

The fourth proportional to 109,478.88, 151,080.66 and 59,177.88 is: 81,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,478.88 : 151,080.66 = 59,177.88 : x
  2. Step 2: Convert to fraction form
    109,478.88/151,080.66 = 59,177.88/x
  3. Step 3: Cross multiply
    109,478.88x = 151,080.66 × 59,177.88
  4. Step 4: Simplify right side
    109,478.88x = 8,940,633,167.80
  5. Step 5: Solve for x
    x = 8,940,633,167.80/109,478.88
  6. Step 6: Final answer
    x = 81,665.37

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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.