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Finding the Fourth Proportional to 57,608.98, 86,218.32 and 35,436.40

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Solution

The fourth proportional to 57,608.98, 86,218.32 and 35,436.40 is: 53,034.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,608.98 : 86,218.32 = 35,436.40 : x
  2. Step 2: Convert to fraction form
    57,608.98/86,218.32 = 35,436.40/x
  3. Step 3: Cross multiply
    57,608.98x = 86,218.32 × 35,436.40
  4. Step 4: Simplify right side
    57,608.98x = 3,055,266,874.85
  5. Step 5: Solve for x
    x = 3,055,266,874.85/57,608.98
  6. Step 6: Final answer
    x = 53,034.56

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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.