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Finding the Fourth Proportional to 6,622,337.80, 9,919,509.90 and 6,622,337.80

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Solution

The fourth proportional to 6,622,337.80, 9,919,509.90 and 6,622,337.80 is: 9,919,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622,337.80 : 9,919,509.90 = 6,622,337.80 : x
  2. Step 2: Convert to fraction form
    6,622,337.80/9,919,509.90 = 6,622,337.80/x
  3. Step 3: Cross multiply
    6,622,337.80x = 9,919,509.90 × 6,622,337.80
  4. Step 4: Simplify right side
    6,622,337.80x = 65,690,345,368,244.22
  5. Step 5: Solve for x
    x = 65,690,345,368,244.22/6,622,337.80
  6. Step 6: Final answer
    x = 9,919,509.90

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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.