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Finding the Fourth Proportional to 56,396.25, 84,600.09 and 20,866.95

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Solution

The fourth proportional to 56,396.25, 84,600.09 and 20,866.95 is: 31,302.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,396.25 : 84,600.09 = 20,866.95 : x
  2. Step 2: Convert to fraction form
    56,396.25/84,600.09 = 20,866.95/x
  3. Step 3: Cross multiply
    56,396.25x = 84,600.09 × 20,866.95
  4. Step 4: Simplify right side
    56,396.25x = 1,765,345,848.03
  5. Step 5: Solve for x
    x = 1,765,345,848.03/56,396.25
  6. Step 6: Final answer
    x = 31,302.54

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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.