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Finding the Fourth Proportional to 11,502.64, 17,239.50 and 4,921.08

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Solution

The fourth proportional to 11,502.64, 17,239.50 and 4,921.08 is: 7,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,502.64 : 17,239.50 = 4,921.08 : x
  2. Step 2: Convert to fraction form
    11,502.64/17,239.50 = 4,921.08/x
  3. Step 3: Cross multiply
    11,502.64x = 17,239.50 × 4,921.08
  4. Step 4: Simplify right side
    11,502.64x = 84,836,958.66
  5. Step 5: Solve for x
    x = 84,836,958.66/11,502.64
  6. Step 6: Final answer
    x = 7,375.43

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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.