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Finding the Fourth Proportional to 149,611.86, 206,491.07 and 89,186.47

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Solution

The fourth proportional to 149,611.86, 206,491.07 and 89,186.47 is: 123,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,611.86 : 206,491.07 = 89,186.47 : x
  2. Step 2: Convert to fraction form
    149,611.86/206,491.07 = 89,186.47/x
  3. Step 3: Cross multiply
    149,611.86x = 206,491.07 × 89,186.47
  4. Step 4: Simplify right side
    149,611.86x = 18,416,209,326.56
  5. Step 5: Solve for x
    x = 18,416,209,326.56/149,611.86
  6. Step 6: Final answer
    x = 123,093.24

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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.