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Finding the Fourth Proportional to 68,512.96, 94,550.64 and 39,832.48

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Solution

The fourth proportional to 68,512.96, 94,550.64 and 39,832.48 is: 54,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,512.96 : 94,550.64 = 39,832.48 : x
  2. Step 2: Convert to fraction form
    68,512.96/94,550.64 = 39,832.48/x
  3. Step 3: Cross multiply
    68,512.96x = 94,550.64 × 39,832.48
  4. Step 4: Simplify right side
    68,512.96x = 3,766,186,476.79
  5. Step 5: Solve for x
    x = 3,766,186,476.79/68,512.96
  6. Step 6: Final answer
    x = 54,970.42

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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.