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Finding the Fourth Proportional to 18,176.40, 27,264.60 and 16,864.20

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Solution

The fourth proportional to 18,176.40, 27,264.60 and 16,864.20 is: 25,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.40 : 27,264.60 = 16,864.20 : x
  2. Step 2: Convert to fraction form
    18,176.40/27,264.60 = 16,864.20/x
  3. Step 3: Cross multiply
    18,176.40x = 27,264.60 × 16,864.20
  4. Step 4: Simplify right side
    18,176.40x = 459,795,667.32
  5. Step 5: Solve for x
    x = 459,795,667.32/18,176.40
  6. Step 6: Final answer
    x = 25,296.30

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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.