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Finding the Fourth Proportional to 20,211.98, 30,314.36 and 7,068.12

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Solution

The fourth proportional to 20,211.98, 30,314.36 and 7,068.12 is: 10,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.98 : 30,314.36 = 7,068.12 : x
  2. Step 2: Convert to fraction form
    20,211.98/30,314.36 = 7,068.12/x
  3. Step 3: Cross multiply
    20,211.98x = 30,314.36 × 7,068.12
  4. Step 4: Simplify right side
    20,211.98x = 214,265,534.20
  5. Step 5: Solve for x
    x = 214,265,534.20/20,211.98
  6. Step 6: Final answer
    x = 10,600.92

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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.