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Finding the Fourth Proportional to 21,959.80, 30,355.59 and 19,593.22

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Solution

The fourth proportional to 21,959.80, 30,355.59 and 19,593.22 is: 27,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.80 : 30,355.59 = 19,593.22 : x
  2. Step 2: Convert to fraction form
    21,959.80/30,355.59 = 19,593.22/x
  3. Step 3: Cross multiply
    21,959.80x = 30,355.59 × 19,593.22
  4. Step 4: Simplify right side
    21,959.80x = 594,763,884.70
  5. Step 5: Solve for x
    x = 594,763,884.70/21,959.80
  6. Step 6: Final answer
    x = 27,084.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.