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Finding the Fourth Proportional to 7,258.64, 10,890.84 and 2,644.88

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Solution

The fourth proportional to 7,258.64, 10,890.84 and 2,644.88 is: 3,968.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,258.64 : 10,890.84 = 2,644.88 : x
  2. Step 2: Convert to fraction form
    7,258.64/10,890.84 = 2,644.88/x
  3. Step 3: Cross multiply
    7,258.64x = 10,890.84 × 2,644.88
  4. Step 4: Simplify right side
    7,258.64x = 28,804,964.90
  5. Step 5: Solve for x
    x = 28,804,964.90/7,258.64
  6. Step 6: Final answer
    x = 3,968.37

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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.