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Finding the Fourth Proportional to 18,742.04, 25,863 and 10,358

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Solution

The fourth proportional to 18,742.04, 25,863 and 10,358 is: 14,293.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.04 : 25,863 = 10,358 : x
  2. Step 2: Convert to fraction form
    18,742.04/25,863 = 10,358/x
  3. Step 3: Cross multiply
    18,742.04x = 25,863 × 10,358
  4. Step 4: Simplify right side
    18,742.04x = 267,888,954
  5. Step 5: Solve for x
    x = 267,888,954/18,742.04
  6. Step 6: Final answer
    x = 14,293.48

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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.