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Finding the Fourth Proportional to 7,867.59, 11,802.60 and 2,672.25

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Solution

The fourth proportional to 7,867.59, 11,802.60 and 2,672.25 is: 4,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.59 : 11,802.60 = 2,672.25 : x
  2. Step 2: Convert to fraction form
    7,867.59/11,802.60 = 2,672.25/x
  3. Step 3: Cross multiply
    7,867.59x = 11,802.60 × 2,672.25
  4. Step 4: Simplify right side
    7,867.59x = 31,539,497.85
  5. Step 5: Solve for x
    x = 31,539,497.85/7,867.59
  6. Step 6: Final answer
    x = 4,008.79

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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.