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Finding the Fourth Proportional to 60,930.48, 91,143 and 57,198

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Solution

The fourth proportional to 60,930.48, 91,143 and 57,198 is: 85,559.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,930.48 : 91,143 = 57,198 : x
  2. Step 2: Convert to fraction form
    60,930.48/91,143 = 57,198/x
  3. Step 3: Cross multiply
    60,930.48x = 91,143 × 57,198
  4. Step 4: Simplify right side
    60,930.48x = 5,213,197,314
  5. Step 5: Solve for x
    x = 5,213,197,314/60,930.48
  6. Step 6: Final answer
    x = 85,559.76

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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.