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Finding the Fourth Proportional to 18,725.68, 25,841.28 and 10,342

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Solution

The fourth proportional to 18,725.68, 25,841.28 and 10,342 is: 14,271.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.68 : 25,841.28 = 10,342 : x
  2. Step 2: Convert to fraction form
    18,725.68/25,841.28 = 10,342/x
  3. Step 3: Cross multiply
    18,725.68x = 25,841.28 × 10,342
  4. Step 4: Simplify right side
    18,725.68x = 267,250,517.76
  5. Step 5: Solve for x
    x = 267,250,517.76/18,725.68
  6. Step 6: Final answer
    x = 14,271.87

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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.