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Finding the Fourth Proportional to 66,805.61, 92,168.85 and 38,104.64

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Solution

The fourth proportional to 66,805.61, 92,168.85 and 38,104.64 is: 52,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,805.61 : 92,168.85 = 38,104.64 : x
  2. Step 2: Convert to fraction form
    66,805.61/92,168.85 = 38,104.64/x
  3. Step 3: Cross multiply
    66,805.61x = 92,168.85 × 38,104.64
  4. Step 4: Simplify right side
    66,805.61x = 3,512,061,078.89
  5. Step 5: Solve for x
    x = 3,512,061,078.89/66,805.61
  6. Step 6: Final answer
    x = 52,571.35

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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.