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Finding the Fourth Proportional to 61,906.98, 85,431.64 and 33,612.66

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Solution

The fourth proportional to 61,906.98, 85,431.64 and 33,612.66 is: 46,385.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,906.98 : 85,431.64 = 33,612.66 : x
  2. Step 2: Convert to fraction form
    61,906.98/85,431.64 = 33,612.66/x
  3. Step 3: Cross multiply
    61,906.98x = 85,431.64 × 33,612.66
  4. Step 4: Simplify right side
    61,906.98x = 2,871,584,668.56
  5. Step 5: Solve for x
    x = 2,871,584,668.56/61,906.98
  6. Step 6: Final answer
    x = 46,385.47

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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.