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Finding the Fourth Proportional to 8,651,318.63, 12,979,818.92 and 3,538,048.90

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Solution

The fourth proportional to 8,651,318.63, 12,979,818.92 and 3,538,048.90 is: 5,308,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651,318.63 : 12,979,818.92 = 3,538,048.90 : x
  2. Step 2: Convert to fraction form
    8,651,318.63/12,979,818.92 = 3,538,048.90/x
  3. Step 3: Cross multiply
    8,651,318.63x = 12,979,818.92 × 3,538,048.90
  4. Step 4: Simplify right side
    8,651,318.63x = 45,923,234,052,105.19
  5. Step 5: Solve for x
    x = 45,923,234,052,105.19/8,651,318.63
  6. Step 6: Final answer
    x = 5,308,235.20

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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.