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Finding the Fourth Proportional to 56,410.80, 84,616.20 and 21,351.60

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Solution

The fourth proportional to 56,410.80, 84,616.20 and 21,351.60 is: 32,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,410.80 : 84,616.20 = 21,351.60 : x
  2. Step 2: Convert to fraction form
    56,410.80/84,616.20 = 21,351.60/x
  3. Step 3: Cross multiply
    56,410.80x = 84,616.20 × 21,351.60
  4. Step 4: Simplify right side
    56,410.80x = 1,806,691,255.92
  5. Step 5: Solve for x
    x = 1,806,691,255.92/56,410.80
  6. Step 6: Final answer
    x = 32,027.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.