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Finding the Fourth Proportional to 127,975.40, 192,059.10 and 65,613.80

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Solution

The fourth proportional to 127,975.40, 192,059.10 and 65,613.80 is: 98,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,975.40 : 192,059.10 = 65,613.80 : x
  2. Step 2: Convert to fraction form
    127,975.40/192,059.10 = 65,613.80/x
  3. Step 3: Cross multiply
    127,975.40x = 192,059.10 × 65,613.80
  4. Step 4: Simplify right side
    127,975.40x = 12,601,727,375.58
  5. Step 5: Solve for x
    x = 12,601,727,375.58/127,975.40
  6. Step 6: Final answer
    x = 98,469.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.