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Finding the Fourth Proportional to 7,663.76, 11,492.60 and 2,664.64

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Solution

The fourth proportional to 7,663.76, 11,492.60 and 2,664.64 is: 3,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,663.76 : 11,492.60 = 2,664.64 : x
  2. Step 2: Convert to fraction form
    7,663.76/11,492.60 = 2,664.64/x
  3. Step 3: Cross multiply
    7,663.76x = 11,492.60 × 2,664.64
  4. Step 4: Simplify right side
    7,663.76x = 30,623,599.61
  5. Step 5: Solve for x
    x = 30,623,599.61/7,663.76
  6. Step 6: Final answer
    x = 3,995.90

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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.