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Finding the Fourth Proportional to 10,879,784.80, 16,321,232.40 and 3,691,650.40

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Solution

The fourth proportional to 10,879,784.80, 16,321,232.40 and 3,691,650.40 is: 5,538,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879,784.80 : 16,321,232.40 = 3,691,650.40 : x
  2. Step 2: Convert to fraction form
    10,879,784.80/16,321,232.40 = 3,691,650.40/x
  3. Step 3: Cross multiply
    10,879,784.80x = 16,321,232.40 × 3,691,650.40
  4. Step 4: Simplify right side
    10,879,784.80x = 60,252,284,117,952.96
  5. Step 5: Solve for x
    x = 60,252,284,117,952.96/10,879,784.80
  6. Step 6: Final answer
    x = 5,538,003.30

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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.