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Finding the Fourth Proportional to 16,398,664.40, 24,597,996.60 and 12,572,289.20

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Solution

The fourth proportional to 16,398,664.40, 24,597,996.60 and 12,572,289.20 is: 18,858,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,398,664.40 : 24,597,996.60 = 12,572,289.20 : x
  2. Step 2: Convert to fraction form
    16,398,664.40/24,597,996.60 = 12,572,289.20/x
  3. Step 3: Cross multiply
    16,398,664.40x = 24,597,996.60 × 12,572,289.20
  4. Step 4: Simplify right side
    16,398,664.40x = 309,253,126,995,816.75
  5. Step 5: Solve for x
    x = 309,253,126,995,816.75/16,398,664.40
  6. Step 6: Final answer
    x = 18,858,433.80

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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.