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Finding the Fourth Proportional to 84,883.70, 127,383.15 and 55,229.30

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Solution

The fourth proportional to 84,883.70, 127,383.15 and 55,229.30 is: 82,881.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,883.70 : 127,383.15 = 55,229.30 : x
  2. Step 2: Convert to fraction form
    84,883.70/127,383.15 = 55,229.30/x
  3. Step 3: Cross multiply
    84,883.70x = 127,383.15 × 55,229.30
  4. Step 4: Simplify right side
    84,883.70x = 7,035,282,206.30
  5. Step 5: Solve for x
    x = 7,035,282,206.30/84,883.70
  6. Step 6: Final answer
    x = 82,881.43

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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.