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Finding the Fourth Proportional to 66,731.88, 92,086.44 and 36,511.32

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Solution

The fourth proportional to 66,731.88, 92,086.44 and 36,511.32 is: 50,383.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.88 : 92,086.44 = 36,511.32 : x
  2. Step 2: Convert to fraction form
    66,731.88/92,086.44 = 36,511.32/x
  3. Step 3: Cross multiply
    66,731.88x = 92,086.44 × 36,511.32
  4. Step 4: Simplify right side
    66,731.88x = 3,362,197,478.50
  5. Step 5: Solve for x
    x = 3,362,197,478.50/66,731.88
  6. Step 6: Final answer
    x = 50,383.68

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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.