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Finding the Fourth Proportional to 67,136.50, 100,719.42 and 25,583.50

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Solution

The fourth proportional to 67,136.50, 100,719.42 and 25,583.50 is: 38,380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,136.50 : 100,719.42 = 25,583.50 : x
  2. Step 2: Convert to fraction form
    67,136.50/100,719.42 = 25,583.50/x
  3. Step 3: Cross multiply
    67,136.50x = 100,719.42 × 25,583.50
  4. Step 4: Simplify right side
    67,136.50x = 2,576,755,281.57
  5. Step 5: Solve for x
    x = 2,576,755,281.57/67,136.50
  6. Step 6: Final answer
    x = 38,380.84

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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.