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Finding the Fourth Proportional to 183,998.40, 275,997.60 and 121,012.80

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Solution

The fourth proportional to 183,998.40, 275,997.60 and 121,012.80 is: 181,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,998.40 : 275,997.60 = 121,012.80 : x
  2. Step 2: Convert to fraction form
    183,998.40/275,997.60 = 121,012.80/x
  3. Step 3: Cross multiply
    183,998.40x = 275,997.60 × 121,012.80
  4. Step 4: Simplify right side
    183,998.40x = 33,399,242,369.28
  5. Step 5: Solve for x
    x = 33,399,242,369.28/183,998.40
  6. Step 6: Final answer
    x = 181,519.20

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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.