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Finding the Fourth Proportional to 67,209.40, 100,814.10 and 59,951.80

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Solution

The fourth proportional to 67,209.40, 100,814.10 and 59,951.80 is: 89,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.40 : 100,814.10 = 59,951.80 : x
  2. Step 2: Convert to fraction form
    67,209.40/100,814.10 = 59,951.80/x
  3. Step 3: Cross multiply
    67,209.40x = 100,814.10 × 59,951.80
  4. Step 4: Simplify right side
    67,209.40x = 6,043,986,760.38
  5. Step 5: Solve for x
    x = 6,043,986,760.38/67,209.40
  6. Step 6: Final answer
    x = 89,927.70

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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.