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Finding the Fourth Proportional to 61,713.80, 85,163.32 and 36,563.30

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Solution

The fourth proportional to 61,713.80, 85,163.32 and 36,563.30 is: 50,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,713.80 : 85,163.32 = 36,563.30 : x
  2. Step 2: Convert to fraction form
    61,713.80/85,163.32 = 36,563.30/x
  3. Step 3: Cross multiply
    61,713.80x = 85,163.32 × 36,563.30
  4. Step 4: Simplify right side
    61,713.80x = 3,113,852,018.16
  5. Step 5: Solve for x
    x = 3,113,852,018.16/61,713.80
  6. Step 6: Final answer
    x = 50,456.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.