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Finding the Fourth Proportional to 7,200.90, 9,939.92 and 4,552.20

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Solution

The fourth proportional to 7,200.90, 9,939.92 and 4,552.20 is: 6,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.90 : 9,939.92 = 4,552.20 : x
  2. Step 2: Convert to fraction form
    7,200.90/9,939.92 = 4,552.20/x
  3. Step 3: Cross multiply
    7,200.90x = 9,939.92 × 4,552.20
  4. Step 4: Simplify right side
    7,200.90x = 45,248,481.06
  5. Step 5: Solve for x
    x = 45,248,481.06/7,200.90
  6. Step 6: Final answer
    x = 6,283.73

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.