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Finding the Fourth Proportional to 68,383.56, 94,368.60 and 40,083.78

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Solution

The fourth proportional to 68,383.56, 94,368.60 and 40,083.78 is: 55,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,383.56 : 94,368.60 = 40,083.78 : x
  2. Step 2: Convert to fraction form
    68,383.56/94,368.60 = 40,083.78/x
  3. Step 3: Cross multiply
    68,383.56x = 94,368.60 × 40,083.78
  4. Step 4: Simplify right side
    68,383.56x = 3,782,650,201.31
  5. Step 5: Solve for x
    x = 3,782,650,201.31/68,383.56
  6. Step 6: Final answer
    x = 55,315.20

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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.