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Finding the Fourth Proportional to 18,757.80, 25,886.34 and 10,801.62

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Solution

The fourth proportional to 18,757.80, 25,886.34 and 10,801.62 is: 14,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.80 : 25,886.34 = 10,801.62 : x
  2. Step 2: Convert to fraction form
    18,757.80/25,886.34 = 10,801.62/x
  3. Step 3: Cross multiply
    18,757.80x = 25,886.34 × 10,801.62
  4. Step 4: Simplify right side
    18,757.80x = 279,614,407.87
  5. Step 5: Solve for x
    x = 279,614,407.87/18,757.80
  6. Step 6: Final answer
    x = 14,906.57

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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.