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Finding the Fourth Proportional to 121,223.92, 181,863.40 and 36,991.60

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Solution

The fourth proportional to 121,223.92, 181,863.40 and 36,991.60 is: 55,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,223.92 : 181,863.40 = 36,991.60 : x
  2. Step 2: Convert to fraction form
    121,223.92/181,863.40 = 36,991.60/x
  3. Step 3: Cross multiply
    121,223.92x = 181,863.40 × 36,991.60
  4. Step 4: Simplify right side
    121,223.92x = 6,727,418,147.44
  5. Step 5: Solve for x
    x = 6,727,418,147.44/121,223.92
  6. Step 6: Final answer
    x = 55,495.80

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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.