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Finding the Fourth Proportional to 29,479.26, 40,672.15 and 16,731.48

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Solution

The fourth proportional to 29,479.26, 40,672.15 and 16,731.48 is: 23,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,479.26 : 40,672.15 = 16,731.48 : x
  2. Step 2: Convert to fraction form
    29,479.26/40,672.15 = 16,731.48/x
  3. Step 3: Cross multiply
    29,479.26x = 40,672.15 × 16,731.48
  4. Step 4: Simplify right side
    29,479.26x = 680,505,264.28
  5. Step 5: Solve for x
    x = 680,505,264.28/29,479.26
  6. Step 6: Final answer
    x = 23,084.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.