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Finding the Fourth Proportional to 67,132.60, 100,583.70 and 31,996.60

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Solution

The fourth proportional to 67,132.60, 100,583.70 and 31,996.60 is: 47,939.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,132.60 : 100,583.70 = 31,996.60 : x
  2. Step 2: Convert to fraction form
    67,132.60/100,583.70 = 31,996.60/x
  3. Step 3: Cross multiply
    67,132.60x = 100,583.70 × 31,996.60
  4. Step 4: Simplify right side
    67,132.60x = 3,218,336,415.42
  5. Step 5: Solve for x
    x = 3,218,336,415.42/67,132.60
  6. Step 6: Final answer
    x = 47,939.99

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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.