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Finding the Fourth Proportional to 57,959.28, 86,673.24 and 43,178.48

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Solution

The fourth proportional to 57,959.28, 86,673.24 and 43,178.48 is: 64,569.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,959.28 : 86,673.24 = 43,178.48 : x
  2. Step 2: Convert to fraction form
    57,959.28/86,673.24 = 43,178.48/x
  3. Step 3: Cross multiply
    57,959.28x = 86,673.24 × 43,178.48
  4. Step 4: Simplify right side
    57,959.28x = 3,742,418,759.88
  5. Step 5: Solve for x
    x = 3,742,418,759.88/57,959.28
  6. Step 6: Final answer
    x = 64,569.79

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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.