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Finding the Fourth Proportional to 66,786.94, 92,165.10 and 38,105.86

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Solution

The fourth proportional to 66,786.94, 92,165.10 and 38,105.86 is: 52,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.94 : 92,165.10 = 38,105.86 : x
  2. Step 2: Convert to fraction form
    66,786.94/92,165.10 = 38,105.86/x
  3. Step 3: Cross multiply
    66,786.94x = 92,165.10 × 38,105.86
  4. Step 4: Simplify right side
    66,786.94x = 3,512,030,397.49
  5. Step 5: Solve for x
    x = 3,512,030,397.49/66,786.94
  6. Step 6: Final answer
    x = 52,585.59

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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.