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Finding the Fourth Proportional to 25,486.56, 38,160.72 and 22,138.56

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Solution

The fourth proportional to 25,486.56, 38,160.72 and 22,138.56 is: 33,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,486.56 : 38,160.72 = 22,138.56 : x
  2. Step 2: Convert to fraction form
    25,486.56/38,160.72 = 22,138.56/x
  3. Step 3: Cross multiply
    25,486.56x = 38,160.72 × 22,138.56
  4. Step 4: Simplify right side
    25,486.56x = 844,823,389.36
  5. Step 5: Solve for x
    x = 844,823,389.36/25,486.56
  6. Step 6: Final answer
    x = 33,147.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.