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Finding the Fourth Proportional to 57,959.72, 86,968.74 and 43,198.28

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Solution

The fourth proportional to 57,959.72, 86,968.74 and 43,198.28 is: 64,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,959.72 : 86,968.74 = 43,198.28 : x
  2. Step 2: Convert to fraction form
    57,959.72/86,968.74 = 43,198.28/x
  3. Step 3: Cross multiply
    57,959.72x = 86,968.74 × 43,198.28
  4. Step 4: Simplify right side
    57,959.72x = 3,756,899,981.77
  5. Step 5: Solve for x
    x = 3,756,899,981.77/57,959.72
  6. Step 6: Final answer
    x = 64,819.15

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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.