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Finding the Fourth Proportional to 67,143.69, 100,694.97 and 22,156.77

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Solution

The fourth proportional to 67,143.69, 100,694.97 and 22,156.77 is: 33,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,143.69 : 100,694.97 = 22,156.77 : x
  2. Step 2: Convert to fraction form
    67,143.69/100,694.97 = 22,156.77/x
  3. Step 3: Cross multiply
    67,143.69x = 100,694.97 × 22,156.77
  4. Step 4: Simplify right side
    67,143.69x = 2,231,075,290.45
  5. Step 5: Solve for x
    x = 2,231,075,290.45/67,143.69
  6. Step 6: Final answer
    x = 33,228.37

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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.