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Finding the Fourth Proportional to 71,383.80, 107,076.42 and 29,253.06

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Solution

The fourth proportional to 71,383.80, 107,076.42 and 29,253.06 is: 43,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,383.80 : 107,076.42 = 29,253.06 : x
  2. Step 2: Convert to fraction form
    71,383.80/107,076.42 = 29,253.06/x
  3. Step 3: Cross multiply
    71,383.80x = 107,076.42 × 29,253.06
  4. Step 4: Simplify right side
    71,383.80x = 3,132,312,938.85
  5. Step 5: Solve for x
    x = 3,132,312,938.85/71,383.80
  6. Step 6: Final answer
    x = 43,879.89

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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.