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Finding the Fourth Proportional to 100,573.18, 150,859.78 and 25,693.50

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Solution

The fourth proportional to 100,573.18, 150,859.78 and 25,693.50 is: 38,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,573.18 : 150,859.78 = 25,693.50 : x
  2. Step 2: Convert to fraction form
    100,573.18/150,859.78 = 25,693.50/x
  3. Step 3: Cross multiply
    100,573.18x = 150,859.78 × 25,693.50
  4. Step 4: Simplify right side
    100,573.18x = 3,876,115,757.43
  5. Step 5: Solve for x
    x = 3,876,115,757.43/100,573.18
  6. Step 6: Final answer
    x = 38,540.25

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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.