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Finding the Fourth Proportional to 40,901.80, 61,352.70 and 22,190.80

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Solution

The fourth proportional to 40,901.80, 61,352.70 and 22,190.80 is: 33,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,901.80 : 61,352.70 = 22,190.80 : x
  2. Step 2: Convert to fraction form
    40,901.80/61,352.70 = 22,190.80/x
  3. Step 3: Cross multiply
    40,901.80x = 61,352.70 × 22,190.80
  4. Step 4: Simplify right side
    40,901.80x = 1,361,465,495.16
  5. Step 5: Solve for x
    x = 1,361,465,495.16/40,901.80
  6. Step 6: Final answer
    x = 33,286.20

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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.