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Finding the Fourth Proportional to 67,101.80, 100,767.90 and 47,517.80

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Solution

The fourth proportional to 67,101.80, 100,767.90 and 47,517.80 is: 71,358.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,101.80 : 100,767.90 = 47,517.80 : x
  2. Step 2: Convert to fraction form
    67,101.80/100,767.90 = 47,517.80/x
  3. Step 3: Cross multiply
    67,101.80x = 100,767.90 × 47,517.80
  4. Step 4: Simplify right side
    67,101.80x = 4,788,268,918.62
  5. Step 5: Solve for x
    x = 4,788,268,918.62/67,101.80
  6. Step 6: Final answer
    x = 71,358.28

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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.