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Finding the Fourth Proportional to 66,658.46, 92,011.84 and 38,375.42

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Solution

The fourth proportional to 66,658.46, 92,011.84 and 38,375.42 is: 52,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,658.46 : 92,011.84 = 38,375.42 : x
  2. Step 2: Convert to fraction form
    66,658.46/92,011.84 = 38,375.42/x
  3. Step 3: Cross multiply
    66,658.46x = 92,011.84 × 38,375.42
  4. Step 4: Simplify right side
    66,658.46x = 3,530,993,004.97
  5. Step 5: Solve for x
    x = 3,530,993,004.97/66,658.46
  6. Step 6: Final answer
    x = 52,971.42

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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.