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Finding the Fourth Proportional to 22,139.60, 33,187.80 and 19,806.80

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Solution

The fourth proportional to 22,139.60, 33,187.80 and 19,806.80 is: 29,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,139.60 : 33,187.80 = 19,806.80 : x
  2. Step 2: Convert to fraction form
    22,139.60/33,187.80 = 19,806.80/x
  3. Step 3: Cross multiply
    22,139.60x = 33,187.80 × 19,806.80
  4. Step 4: Simplify right side
    22,139.60x = 657,344,117.04
  5. Step 5: Solve for x
    x = 657,344,117.04/22,139.60
  6. Step 6: Final answer
    x = 29,690.88

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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.