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Finding the Fourth Proportional to 66,892.86, 92,311.09 and 36,678.44

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Solution

The fourth proportional to 66,892.86, 92,311.09 and 36,678.44 is: 50,615.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,892.86 : 92,311.09 = 36,678.44 : x
  2. Step 2: Convert to fraction form
    66,892.86/92,311.09 = 36,678.44/x
  3. Step 3: Cross multiply
    66,892.86x = 92,311.09 × 36,678.44
  4. Step 4: Simplify right side
    66,892.86x = 3,385,826,775.90
  5. Step 5: Solve for x
    x = 3,385,826,775.90/66,892.86
  6. Step 6: Final answer
    x = 50,615.67

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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.