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Finding the Fourth Proportional to 18,751.68, 25,876.53 and 10,253.43

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Solution

The fourth proportional to 18,751.68, 25,876.53 and 10,253.43 is: 14,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.68 : 25,876.53 = 10,253.43 : x
  2. Step 2: Convert to fraction form
    18,751.68/25,876.53 = 10,253.43/x
  3. Step 3: Cross multiply
    18,751.68x = 25,876.53 × 10,253.43
  4. Step 4: Simplify right side
    18,751.68x = 265,323,189.00
  5. Step 5: Solve for x
    x = 265,323,189.00/18,751.68
  6. Step 6: Final answer
    x = 14,149.30

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1.5x scale

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.