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Finding the Fourth Proportional to 66,769.30, 92,141.64 and 36,554.80

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Solution

The fourth proportional to 66,769.30, 92,141.64 and 36,554.80 is: 50,445.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,769.30 : 92,141.64 = 36,554.80 : x
  2. Step 2: Convert to fraction form
    66,769.30/92,141.64 = 36,554.80/x
  3. Step 3: Cross multiply
    66,769.30x = 92,141.64 × 36,554.80
  4. Step 4: Simplify right side
    66,769.30x = 3,368,219,221.87
  5. Step 5: Solve for x
    x = 3,368,219,221.87/66,769.30
  6. Step 6: Final answer
    x = 50,445.63

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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.