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Finding the Fourth Proportional to 7,473.80, 11,210.70 and 5,400.20

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Solution

The fourth proportional to 7,473.80, 11,210.70 and 5,400.20 is: 8,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,473.80 : 11,210.70 = 5,400.20 : x
  2. Step 2: Convert to fraction form
    7,473.80/11,210.70 = 5,400.20/x
  3. Step 3: Cross multiply
    7,473.80x = 11,210.70 × 5,400.20
  4. Step 4: Simplify right side
    7,473.80x = 60,540,022.14
  5. Step 5: Solve for x
    x = 60,540,022.14/7,473.80
  6. Step 6: Final answer
    x = 8,100.30

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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.