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Finding the Fourth Proportional to 68,614.60, 102,921.90 and 27,056.20

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Solution

The fourth proportional to 68,614.60, 102,921.90 and 27,056.20 is: 40,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,614.60 : 102,921.90 = 27,056.20 : x
  2. Step 2: Convert to fraction form
    68,614.60/102,921.90 = 27,056.20/x
  3. Step 3: Cross multiply
    68,614.60x = 102,921.90 × 27,056.20
  4. Step 4: Simplify right side
    68,614.60x = 2,784,675,510.78
  5. Step 5: Solve for x
    x = 2,784,675,510.78/68,614.60
  6. Step 6: Final answer
    x = 40,584.30

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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.