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Finding the Fourth Proportional to 77,383.44, 106,781.73 and 43,393.36

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Solution

The fourth proportional to 77,383.44, 106,781.73 and 43,393.36 is: 59,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,383.44 : 106,781.73 = 43,393.36 : x
  2. Step 2: Convert to fraction form
    77,383.44/106,781.73 = 43,393.36/x
  3. Step 3: Cross multiply
    77,383.44x = 106,781.73 × 43,393.36
  4. Step 4: Simplify right side
    77,383.44x = 4,633,618,051.31
  5. Step 5: Solve for x
    x = 4,633,618,051.31/77,383.44
  6. Step 6: Final answer
    x = 59,878.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.