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Finding the Fourth Proportional to 7,464.80, 11,200.80 and 5,268.80

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Solution

The fourth proportional to 7,464.80, 11,200.80 and 5,268.80 is: 7,905.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,464.80 : 11,200.80 = 5,268.80 : x
  2. Step 2: Convert to fraction form
    7,464.80/11,200.80 = 5,268.80/x
  3. Step 3: Cross multiply
    7,464.80x = 11,200.80 × 5,268.80
  4. Step 4: Simplify right side
    7,464.80x = 59,014,775.04
  5. Step 5: Solve for x
    x = 59,014,775.04/7,464.80
  6. Step 6: Final answer
    x = 7,905.74

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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.