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Finding the Fourth Proportional to 100,561.67, 150,842.36 and 25,681.86

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Solution

The fourth proportional to 100,561.67, 150,842.36 and 25,681.86 is: 38,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,561.67 : 150,842.36 = 25,681.86 : x
  2. Step 2: Convert to fraction form
    100,561.67/150,842.36 = 25,681.86/x
  3. Step 3: Cross multiply
    100,561.67x = 150,842.36 × 25,681.86
  4. Step 4: Simplify right side
    100,561.67x = 3,873,912,684.49
  5. Step 5: Solve for x
    x = 3,873,912,684.49/100,561.67
  6. Step 6: Final answer
    x = 38,522.76

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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.