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Finding the Fourth Proportional to 66,400.97, 91,633.34 and 36,592.97

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Solution

The fourth proportional to 66,400.97, 91,633.34 and 36,592.97 is: 50,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.97 : 91,633.34 = 36,592.97 : x
  2. Step 2: Convert to fraction form
    66,400.97/91,633.34 = 36,592.97/x
  3. Step 3: Cross multiply
    66,400.97x = 91,633.34 × 36,592.97
  4. Step 4: Simplify right side
    66,400.97x = 3,353,135,901.34
  5. Step 5: Solve for x
    x = 3,353,135,901.34/66,400.97
  6. Step 6: Final answer
    x = 50,498.30

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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.