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Finding the Fourth Proportional to 61,906.80, 85,431.62 and 33,612.48

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Solution

The fourth proportional to 61,906.80, 85,431.62 and 33,612.48 is: 46,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,906.80 : 85,431.62 = 33,612.48 : x
  2. Step 2: Convert to fraction form
    61,906.80/85,431.62 = 33,612.48/x
  3. Step 3: Cross multiply
    61,906.80x = 85,431.62 × 33,612.48
  4. Step 4: Simplify right side
    61,906.80x = 2,871,568,618.62
  5. Step 5: Solve for x
    x = 2,871,568,618.62/61,906.80
  6. Step 6: Final answer
    x = 46,385.35

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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.