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Finding the Fourth Proportional to 100,605.90, 150,908.82 and 25,726.20

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Solution

The fourth proportional to 100,605.90, 150,908.82 and 25,726.20 is: 38,589.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605.90 : 150,908.82 = 25,726.20 : x
  2. Step 2: Convert to fraction form
    100,605.90/150,908.82 = 25,726.20/x
  3. Step 3: Cross multiply
    100,605.90x = 150,908.82 × 25,726.20
  4. Step 4: Simplify right side
    100,605.90x = 3,882,310,485.08
  5. Step 5: Solve for x
    x = 3,882,310,485.08/100,605.90
  6. Step 6: Final answer
    x = 38,589.29

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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.