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Finding the Fourth Proportional to 7,227,603.54, 9,978,686.46 and 6,451,874.64

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Solution

The fourth proportional to 7,227,603.54, 9,978,686.46 and 6,451,874.64 is: 8,907,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,227,603.54 : 9,978,686.46 = 6,451,874.64 : x
  2. Step 2: Convert to fraction form
    7,227,603.54/9,978,686.46 = 6,451,874.64/x
  3. Step 3: Cross multiply
    7,227,603.54x = 9,978,686.46 × 6,451,874.64
  4. Step 4: Simplify right side
    7,227,603.54x = 64,381,234,111,785.38
  5. Step 5: Solve for x
    x = 64,381,234,111,785.38/7,227,603.54
  6. Step 6: Final answer
    x = 8,907,687.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.