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Finding the Fourth Proportional to 56,202.89, 84,292.88 and 20,651.99

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Solution

The fourth proportional to 56,202.89, 84,292.88 and 20,651.99 is: 30,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,202.89 : 84,292.88 = 20,651.99 : x
  2. Step 2: Convert to fraction form
    56,202.89/84,292.88 = 20,651.99/x
  3. Step 3: Cross multiply
    56,202.89x = 84,292.88 × 20,651.99
  4. Step 4: Simplify right side
    56,202.89x = 1,740,815,190.11
  5. Step 5: Solve for x
    x = 1,740,815,190.11/56,202.89
  6. Step 6: Final answer
    x = 30,973.77

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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.