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Finding the Fourth Proportional to 18,751.85, 25,877.31 and 10,253.87

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Solution

The fourth proportional to 18,751.85, 25,877.31 and 10,253.87 is: 14,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.85 : 25,877.31 = 10,253.87 : x
  2. Step 2: Convert to fraction form
    18,751.85/25,877.31 = 10,253.87/x
  3. Step 3: Cross multiply
    18,751.85x = 25,877.31 × 10,253.87
  4. Step 4: Simplify right side
    18,751.85x = 265,342,572.69
  5. Step 5: Solve for x
    x = 265,342,572.69/18,751.85
  6. Step 6: Final answer
    x = 14,150.21

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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.