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Finding the Fourth Proportional to 31,508.61, 43,482.02 and 17,361.47

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Solution

The fourth proportional to 31,508.61, 43,482.02 and 17,361.47 is: 23,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,508.61 : 43,482.02 = 17,361.47 : x
  2. Step 2: Convert to fraction form
    31,508.61/43,482.02 = 17,361.47/x
  3. Step 3: Cross multiply
    31,508.61x = 43,482.02 × 17,361.47
  4. Step 4: Simplify right side
    31,508.61x = 754,911,481.55
  5. Step 5: Solve for x
    x = 754,911,481.55/31,508.61
  6. Step 6: Final answer
    x = 23,958.90

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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.