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Finding the Fourth Proportional to 20,762.80, 31,134.80 and 5,968.40

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Solution

The fourth proportional to 20,762.80, 31,134.80 and 5,968.40 is: 8,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.80 : 31,134.80 = 5,968.40 : x
  2. Step 2: Convert to fraction form
    20,762.80/31,134.80 = 5,968.40/x
  3. Step 3: Cross multiply
    20,762.80x = 31,134.80 × 5,968.40
  4. Step 4: Simplify right side
    20,762.80x = 185,824,940.32
  5. Step 5: Solve for x
    x = 185,824,940.32/20,762.80
  6. Step 6: Final answer
    x = 8,949.90

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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.