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Finding the Fourth Proportional to 22,116.40, 33,077.40 and 18,617.20

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Solution

The fourth proportional to 22,116.40, 33,077.40 and 18,617.20 is: 27,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,116.40 : 33,077.40 = 18,617.20 : x
  2. Step 2: Convert to fraction form
    22,116.40/33,077.40 = 18,617.20/x
  3. Step 3: Cross multiply
    22,116.40x = 33,077.40 × 18,617.20
  4. Step 4: Simplify right side
    22,116.40x = 615,808,571.28
  5. Step 5: Solve for x
    x = 615,808,571.28/22,116.40
  6. Step 6: Final answer
    x = 27,843.98

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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.