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Finding the Fourth Proportional to 121,606.20, 182,409.30 and 99,736.20

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Solution

The fourth proportional to 121,606.20, 182,409.30 and 99,736.20 is: 149,604.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,606.20 : 182,409.30 = 99,736.20 : x
  2. Step 2: Convert to fraction form
    121,606.20/182,409.30 = 99,736.20/x
  3. Step 3: Cross multiply
    121,606.20x = 182,409.30 × 99,736.20
  4. Step 4: Simplify right side
    121,606.20x = 18,192,810,426.66
  5. Step 5: Solve for x
    x = 18,192,810,426.66/121,606.20
  6. Step 6: Final answer
    x = 149,604.30

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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.