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Finding the Fourth Proportional to 66,872.50, 92,286.88 and 38,196.88

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Solution

The fourth proportional to 66,872.50, 92,286.88 and 38,196.88 is: 52,713.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872.50 : 92,286.88 = 38,196.88 : x
  2. Step 2: Convert to fraction form
    66,872.50/92,286.88 = 38,196.88/x
  3. Step 3: Cross multiply
    66,872.50x = 92,286.88 × 38,196.88
  4. Step 4: Simplify right side
    66,872.50x = 3,525,070,880.93
  5. Step 5: Solve for x
    x = 3,525,070,880.93/66,872.50
  6. Step 6: Final answer
    x = 52,713.31

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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.