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Finding the Fourth Proportional to 84,822.40, 127,233.60 and 84,044.80

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Solution

The fourth proportional to 84,822.40, 127,233.60 and 84,044.80 is: 126,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,822.40 : 127,233.60 = 84,044.80 : x
  2. Step 2: Convert to fraction form
    84,822.40/127,233.60 = 84,044.80/x
  3. Step 3: Cross multiply
    84,822.40x = 127,233.60 × 84,044.80
  4. Step 4: Simplify right side
    84,822.40x = 10,693,322,465.28
  5. Step 5: Solve for x
    x = 10,693,322,465.28/84,822.40
  6. Step 6: Final answer
    x = 126,067.20

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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.