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Finding the Fourth Proportional to 73,589.88, 110,876.52 and 66,578.79

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Solution

The fourth proportional to 73,589.88, 110,876.52 and 66,578.79 is: 100,313.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,589.88 : 110,876.52 = 66,578.79 : x
  2. Step 2: Convert to fraction form
    73,589.88/110,876.52 = 66,578.79/x
  3. Step 3: Cross multiply
    73,589.88x = 110,876.52 × 66,578.79
  4. Step 4: Simplify right side
    73,589.88x = 7,382,024,541.01
  5. Step 5: Solve for x
    x = 7,382,024,541.01/73,589.88
  6. Step 6: Final answer
    x = 100,313.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.