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Finding the Fourth Proportional to 22,119.60, 30,563.90 and 17,679.99

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Solution

The fourth proportional to 22,119.60, 30,563.90 and 17,679.99 is: 24,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,119.60 : 30,563.90 = 17,679.99 : x
  2. Step 2: Convert to fraction form
    22,119.60/30,563.90 = 17,679.99/x
  3. Step 3: Cross multiply
    22,119.60x = 30,563.90 × 17,679.99
  4. Step 4: Simplify right side
    22,119.60x = 540,369,357.96
  5. Step 5: Solve for x
    x = 540,369,357.96/22,119.60
  6. Step 6: Final answer
    x = 24,429.44

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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.