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Finding the Fourth Proportional to 18,189,646.20, 27,284,469.30 and 10,914,809.40

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Solution

The fourth proportional to 18,189,646.20, 27,284,469.30 and 10,914,809.40 is: 16,372,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189,646.20 : 27,284,469.30 = 10,914,809.40 : x
  2. Step 2: Convert to fraction form
    18,189,646.20/27,284,469.30 = 10,914,809.40/x
  3. Step 3: Cross multiply
    18,189,646.20x = 27,284,469.30 × 10,914,809.40
  4. Step 4: Simplify right side
    18,189,646.20x = 297,804,781,989,651.44
  5. Step 5: Solve for x
    x = 297,804,781,989,651.44/18,189,646.20
  6. Step 6: Final answer
    x = 16,372,214.10

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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.