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Finding the Fourth Proportional to 73,659.28, 110,488.86 and 18,255.28

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Solution

The fourth proportional to 73,659.28, 110,488.86 and 18,255.28 is: 27,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,659.28 : 110,488.86 = 18,255.28 : x
  2. Step 2: Convert to fraction form
    73,659.28/110,488.86 = 18,255.28/x
  3. Step 3: Cross multiply
    73,659.28x = 110,488.86 × 18,255.28
  4. Step 4: Simplify right side
    73,659.28x = 2,017,005,076.18
  5. Step 5: Solve for x
    x = 2,017,005,076.18/73,659.28
  6. Step 6: Final answer
    x = 27,382.91

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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.